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1/49 XCM519 series 600ma synchronous step-down dc/dc converter + low voltage input ldo general description the XCM519 series is a multi combination module ic which comprises of a 600ma driver transistor built-in synchronous step?down dc/dc converter and a low voltage input ldo regulator. the device is housed in small usp-12b01 package which is ideally suited for space conscious applications. battery operated portable products require high efficiency so that a dual dc/dc converter is often used. the xcm5 19 can replace this dual dc/dc to elim inate one inductor and reduce output noise. the dc/dc converter and the ldo regulator blocks are isolated in the package so that noise interference from the dc/dc to the ldo regulator is minimal. a low output voltage and low on-resistance ldo regulator is adde d in series to the dc/dc output so that one another low output voltage is created with a high efficiency and low noise. with comparison to the dual dc/dc solution, one inductor can be eliminated which results in parts reduction and board space saving. applications ? mobile phones, smart phones ? bluetooth equipment ? portable communication modems ? portable game consoles ( top view ) * the dashed lines denot e the connection using through-holes at the backside of the pc board. etr2421-003 ? typical application circuit typical performance characteristics dropout voltage vs. output current vrout=1.2v 0 50 100 150 200 250 300 0 100 200 300 400 output current: iout(ma) dropout voltage: vdif(mv) vbias=3.0v vbias=3.3v vbias=3.6v vbias=4.2v vbias=5.0v ta=25 features input voltage range : 2.7v ~ 6.0v output voltage range : 0.8v ~ 4.0v high efficiency : 92% (typ.) output current : 600ma (max.) oscillation frequency : 1.2mhz, 3.0mhz (+ 15%) maximum duty cycle : 100% soft-start circuit built-in current limiter circuit built-in (constant current & latching) control methods : pwm (XCM519a) pwm/pfm auto (XCM519b) *performance depends on external components and wiring on pcb wiring. maximum output current : 400ma (limiter 550ma typ.) dropout voltage : 35mv@i out =100ma (typ.) (at v bias - v rout(e) =2.4v) bias voltage range : 2.5v ~ 6.0v (v bias - v rout(e) =0.9v) input voltage range : 1.0v ~ 3.0v (v in2 ? v bias ) output voltage range : 0.7v ~ 1.8v (0.05v increments) high output accuracy : 20mv supply current : i bias =25 a ?? i in2 =1.0 a (typ.) stand-by current : i bias =0.01 a , i in2 =0.01 a (typ.) uvlo : v bias =2.0v , v in2 =0.4v (typ) thermal shut down : detect 150 ? , release 125 ? (typ.) soft-start time : 240 s ? v rout =1.2v(typ.) c l high speed auto-discharge ? low esr capacitor : cera mic capacitor compatible operating temperature range : -40 ? ~ +85 ? package : usp-12b01 standard voltage combinations : dc/dc vr XCM519xx01dx 1.8v 1.2v XCM519xx02dx 1.8v 1.5v XCM519xx03dx 1.5v 1.2v XCM519xx04dx 1.8v 1.0v XCM519xx05dx 1.5v 1.0v *other combinations are ava ilable as semi-custom products.
2/49 XCM519 series ? ?? ? ???????????????????????? pin no . XCM519 xc9235/xc9236 xc6601 1 dcout v out D 2 agnd agnd D 3 en1 ce D 4 v in2 D v in 5 v ss2 D v ss 6 vrout D v out 7 en2 D ce 8 nc D D 9 v bias D v bias 10 v in1 v in D 11 pgnd pgnd D 12 lx lx D ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? pin no XCM519 functions 1 dcout dc/dc block: output voltage 2 agnd dc/dc block: analog ground 3 en1 dc/dc block: chip enable 4 v in2 voltage regulator block: power input 5 v ss2 voltage regulator block: ground 6 vrout voltage regulator block: output 7 en2 voltage regulator block: enable 8 nc no connection 9 v bias voltage regulator block: power input 10 v in1 dc/dc block: power input 11 pgnd dc/dc block: power ground 12 lx dc/dc block: switching note: * a dissipation pad on the reverse side of the package should be electrically isolated. ? *1: electrical potential of the xc 9235/xc9236?s dissipation pad should be v ss level. *2: electrical potential of the xc 6601?s dissipation pad should be v ss level. care must be taken for an electrical potential of each diss ipation pad so as to enhance mounting strength and heat release when the pad needs to be connected to the circuit. pin assignment pin configuratioin (top view) (bottom view)
3/49 x cm519 series ? ? ? ? ordering information XCM519a ????? dc/dc block pwm fixed control XCM519b ????? dc/dc block pwm/pfm automatic switching control ? designator ? dc/dc block voltage regulator block ?? oscillation frequency ? c l auto discharge soft start pull-down a 1.2m not available standard not available b 3.0m not available standard not available c 1.2m available high speed not available d 3.0m available high speed not available ? ? ? ? ? designator ??? ?? dcout vrout 01 1.8v 1.2v 02 1.8v 1.5v 03 1.5v 1.2v 04 1.8v 1.0v 05 1.5v 1.0v ? ? designator description symbol description ? oscillation frequency and options see the chart below ? ? output voltage internally set sequential number relating to output voltage (see the chart below) ? package d usp-12b01 ? device orientation r embossed tape, standard feed product classification *this series are semi-custom products. for other combinations of output voltages pleas e consult with your torex sales contact. *when the dcout pin is connected to v in2 , dcout pin output voltage can be fixed in the range of 1.0v ? 3.0v.
4/49 XCM519 series ???????????????????????????????????????????????????????? ta = 2 5 ? (*1) i vrout =less than pd / (v in2 -v rout ) ? parameter symbol ratings units v in1 voltage v in1 - 0.3 ? 6.5 v lx voltage v lx - 0.3 ? v in1 + 0.3 or 6.5 v dcout voltage v dcout - 0.3 ? 6.5 v en1 voltage v en1 - 0.3 ? 6.5 v lx current i lx 1500 ma v bias voltage v bias v ss - 0.3 ? 7.0 v v in2 voltage v in2 v ss - 0.3 ? 7.0 v vrout current i vrout 700 (*1) ma v ss - 0.3 ? v bias + 0.3 vrout voltage v rout v ss - 0.3 ? v in2 + 0.3 v en2 voltage v en2 v ss - 0.3 ? 6.5 v power dissipation (ta=25 ? ) usp-12b01 pd 150 mw junction temperature tj 125 ? operating temperature range topr -40 ? +85 ? storage temperature range tstg -55 ? +125 ? r2 r1 error amp. vref with soft start, ce phase compensation pwm/pfm selector current feedback current limit pwm comparator logic synch buffer drive r3 r4 uvlo uvlo cmp ramp wave generator osc lx ce/mode control logic ce/ vshort ce r2 r1 error amp. vref with soft start, ce phase compensation pwm/pfm selector current feedback current limit pwm comparator logic synch buffer drive r3 r4 uvlo uvlo cmp ramp wave generator osc lx v ss v in v out ce/mode control logic vshort xc9235a/xc9236a xc9235b/xc9236b (cl?C ???` v ss v in v out block diagrams maximum absolute ratings available with c l discharge, high speed soft-start * xc9235 control scheme is a fixed pwm because that the ?ce/mode control logic? outputs a low level signal to the ?pwm/pfm sele ctor?. * xc9236 control scheme is an auto pwm/pfm switching because the ?ce/mode control logic? outputs a high level signal to the ?pw m/pfm selector?. *diodes inside the circuit are an esd protection diode and a parasitic diode. xc6601b (without pull-down)
5/49 x cm519 series electrical characteristics ? XCM519xa (dc/dc block) v dcout =1.8v, f osc =1.2mhz, ta=25 ? test conditions: unless otherwise stated, v in = 5.0v, v dcout(e) = setting voltage note: *1: including hysteresis width of operating voltage. *2: effi = { ( output voltage output current ) ?? ( input voltage input current) } 100 *3: on resistance (
)= (v in - lx pin measurement voltage) ?? 100ma *4: design value *5: when temperature is high, a current of approximately 10 a (maximum) may leak. *6: time until it short-circuits dcout with gnd via 1
of resistor from an operational state and is set to lx=0v from current limit pulse generating. *7: v dcout (e) +1.2v<2.7v, v in =2.7v. *8: when the difference between the input and the output is small, some cycles may be skipped completely before current maximiz es. if current is further pulled from this state, output vo ltage will decrease because of p-ch driver on resistance. *9: current limit denotes the level of detection at peak of coil current. *10: "h" 1 v in ? v in - 1.2v, "l" 1 + 0.1v ? - 0.1v *11: XCM519a series exclude i pfm and maxi pfm because those are only for the pfm control?s functions. * the electrical characteri stics above are when the other channel is in stop mode. parameter symbol conditions min. typ. max. units circuit output voltage v dcout when connected to external components, v in1 = v en1 =5.0v, i out1 =30ma 1.764 1.800 1.836 v ? operating voltage range v in1 ? 2.7 - 6.0 v ? maximum output current i out1max when connected to external components, v in1 =dcout(e)+2.0v, v en1 =1.0v (*8) ? 600 - - ma ? uvlo voltage v uvlo v en1 =v in1, dcout=0v, voltage which lx pin holding ?l? level (*1, *10) ? 1.00 1.40 1.78 v ? (XCM519aa) - 22 50 supply current i dd v in1 =v en1 =5.0v, dcout=dcout(e)1.1v (XCM519ba) - 15 33 ? stand-by current i stb v in1 =5.0v, v en1 =0v, dcout=dcout(e) 1.1v - 0 1.0 a ? oscillation frequency f osc when connected to external components, v in1 = dcout(e) +2.0v,v en1 =1.0v, i out1 =100ma (*11) 1020 1200 1380 khz ? pfm switching current ? when connected to external components, v in1 =v dcout(e) +2.0v, v en1 =v in1 , i out1 =1ma (*11) 120 160 200 ma ? pfm duty limit ? d limit_pfm v en1 =v in1 =(c-1), i out1 =1ma (*11) - 200 - % ? maximum duty ratio d max v in1 = v en1 =5.0v, dcout=dcout(e) 0.9v 100 - - % ? minimum duty ratio d min v in1 = v en1 =5.0v, dcout=dcout(e) 1.1v - - 0 % ? efficiency (*2) effi when connected to external components, v en1 =v in1 1 dcout(e) +1.2v (*7) , i out1 =100ma - 92 - % ? lx sw "h" on resistance 1 r lxh v in1 = v en1 =5.0v, dcout =0v,i lx =100ma (*3) - 0.35 0.55 ? ? lx sw "h" on resistance 2 r lxh v in1 = v en1 =3.6v, dcout =0v,i lx =100ma (*3) - 0.42 0.67 ? ? lx sw "l" on resistance 1 r lxl v in1 = v en1 =5.0v (*4) - 0.45 0.66 ? lx sw "l" on resistance 2 r lxl v in1 = v en1 =3.6v (*4) - 0.52 0.77 ? lx sw "h" leak current (*5) i leakh v in1 = dcout =5.0v, v en1 =0v, v lx =0v - 0.01 1.0 a ? lx sw "l" leak current (*5) i leakl v in1 = dcout =5.0v, v en1 =0v, v lx =5.0v - 0.01 1.0 a ? current limit (*9) i lim v in1 =v en1 =5.0v, dcout = dcout(e) 0.9v 900 1050 1350 ma ? output voltage temperature characteristics dcout / (dcout ~ topr) i out1 =30ma -40 ?? topr ? 85 ?? - 100 - ppm/ ? ? en1 "h" level voltage v en1h dcout=0v, applied voltage to v en, voltage changes lx to ?h? level (*10) 0.65 - 6.0 v ? en1 "l" level voltage v en1l dcout=0v, applied voltage to v en, voltage changes lx to ?l? level (*10) v ss - 0.25 v ? en1 "h" current i en1h v in1 =v en1 =5.0v, dcout=0v - 0.1 - 0.1 a ? ? en1 "l" current i en1l v in1 =5.0v, v en1 =0v, dcout=0v - 0.1 - 0.1 a ? ? soft start time t ss when connected to external components, v en1 =0v v in1 , i out1 =1ma ? 0.5 1.0 2.5 ms ? latch time t lat v in = v en =5.0v, dcout=0.8 dcout(e) short lx at 1 ? resistance (*6) ? 1.0 - 20.0 ms ? short protection threshold voltage ? v short sweeping dcout, v in1 =v en1 = 5.0v, short lx at 1 ? resistance, dcout voltage which lx becomes ?l? level within 1ms ? 0.675 0.900 1.125 v ?
6/49 XCM519 series electrical characteristics (continued) ? XCM519xb 1ch (dc/dc block) v dcout =1.8v, f osc =3.0mhz, ta=25 test conditions: unless otherwise stated, v in1 =5.0v, v dcout(e) = nominal voltage note: *1: including hysteresis width of operating voltage. *2: effi = { ( output voltage output current ) ?? ( input voltage input current) } 100 *3: on resistance (
)= (v in - lx pin measurement voltage) ?? 100ma *4: design value *5: when temperature is high, a current of approximately 10 a (maximum) may leak. *6: time until it short-circuits dcout with gnd via 1
of resistor from an operational state and is set to lx=0v from current limit pulse generating. *7: v dcout (e) +1.2v<2.7v, v in =2.7v. *8: when the difference between the input and the output is small, some cycles may be skipped completely before current maximiz es. if current is further pulled from this state, output vo ltage will decrease because of p-ch driver on resistance. *9: current limit denotes the level of detection at peak of coil current. *10: "h" 1 v in ? v in - 1.2v, "l" 1 + 0.1v ? - 0.1v *11: XCM519a series exclude i pfm and d limit_pfm because those are only for the pfm control?s functions. * the electrical characteri stics above are when the other channel is in stop mode. parameter symbol conditions min. typ. max. units circuit output voltage v dcout when connected to external components, v in1 = v en1 =5.0v, i out1 =30ma 1.764 1.800 1.836 v ? operating voltage range v in1 ? 2.7 - 6.0 v ? maximum output current i out1max when connected to external components, v in1 =v dcout(e) +2.0v, v en1 =1.0v (*8) ? 600 - - ma ? uvlo voltage v uvlo v en1 =v in1, dcout=0v, voltage which lx pin holding ?l? level (*1, *10) ? 1.00 1.40 1.78 v ? (XCM519ab) - 46 65 supply current i dd v in1 =v en1 =5.0v, dcout=
?e 1.1v (XCM519bb) - 21 35 ? stand-by current i stb v in1 =5.0v, v en1 =0v, dcout=
?e 1.1v - 0 1.0 a ? oscillation frequency f osc when connected to external components, v in1 =
?e +2.0v,v en1 =1.0v, i out1 =100ma 2550 3000 3450 khz ? pfm switching current i pfm when connected to external components, v in1 =
?e +2.0v, v en1 =v in1 , i out1 =1ma (*11) 170 220 270 ma ? pfm duty limit d limit_pfm v en1 =v in1 =(c-1) i out1 =1ma (*11) - 200 300 % ? maximum duty ratio d max v in1 =v en1 =5.0v, dcout=
?e 0.9v 100 - - % ? minimum duty ratio d min v in1 =v en1 =5.0v, dcout=
?e 1.1v - - 0 % ? efficiency effi when connected to external components, v en1 =v in1 1
?e +1.2v, i out1 =100ma ? - 86 - % ? lx sw "h" on resistance 1 r lxh v in1 = v en1 =5.0v, dcout=0v,i lx =100ma (*3) - 0.35 0.55 ? ? lx sw "h" on resistance 2 r lxh v in1 = v en1 =3.6v, dcout=0v,i lx =100ma (*3) - 0.42 0.67 ? ? lx sw "l" on resistance 1 r lxl v in1 = v en1 =5.0v (*4) - 0.45 0.66 ? lx sw "l" on resistance 2 r lxl v in1 = v en1 =3.6v (*4) - 0.52 0.77 ? lx sw "h" leak current (*5) i leakh v in1 = dcout=5.0v, v en1 =0v, v lx =0v - 0.01 1.0 a ? ? lx sw "l" leak current (*5) i leakl v in1 = dcout=5.0v, v en1 =0v, v lx =5.0v - 0.01 1.0 a ? ? current limit (*9) ? v in1 =v en1 =5.0v, dcout=
?e 0.9v 900 1050 1350 ma ? output voltage temperature characteristics
??? ?
~ ;679e ? i out1 =30ma -40 ?? topr ? 85 ? - 100 - ppm/ ? ? en1 "h" level voltage v en1h dcout=0v, applied voltage to v en, voltage changes lx to ?h? level (*10) 0.65 - 6.0 v ? en1 "l" level voltage v en1l dcout=0v, applied voltage to v en, voltage changes lx to ?l? level (*10) v ss - 0.25 v ? en1 "h" current i en1h v in1 =v en1 =5.0v, dcout=0v - 0.1 - 0.1 a ? ? en1 "l" current i en1l v in1 =5.0v, v en1 =0v, dcout=0v - 0.1 - 0.1 a ? ? soft start time t ss when connected to external components, v en1 =0v v in1 , i out1 =1ma 0.5 0.9 2.5 ms ? latch time t lat v in1 =v en1 =5.0v, dcout=0.8
?e short lx at 1 ? resistance (*6) 1.0 - 20 ms ? short protection threshold voltage v short sweeping dcout, v in1 =v en1 =5.0v, short lx at 1 ? resistance, dcout voltage which lx becomes ?l? level within 1ms 0.675 0.900 1.125 v ?
7/49 x cm519 series electrical characteristics (continued) XCM519xc 1ch (dc/dc block) v dcout =1.8v, f osc =1.2mhz, ta=25 test conditions: unless otherwise stated, v in1 =5.0v, v dcout(e )= nominal voltage note: *1: including hysteresis width of operating voltage. *2: effi = { ( output voltage output current ) ?? ( input voltage input current) } 100 *3: on resistance (
)= (v in - lx pin measurement voltage) ?? 100ma *4: design value *5: when temperature is high, a current of approximately 10 a (maximum) may leak. *6: time until it short-circuits dcout with gnd via 1
of resistor from an operational state and is set to lx=0v from current limit pulse generating. *7: v dcout (e) +1.2v<2.7v, v in =2.7v. *8: when the difference between the input and the output is small, some cycles may be skipped completely before current maximiz es. if current is further pulled from this state, output vo ltage will decrease because of p-ch driver on resistance. *9: current limit denotes the level of detection at peak of coil current. *10: "h" 1 v in ? v in - 1.2v, "l" 1 + 0.1v ? - 0.1v *11: XCM519a series exclude i pfm and d limt_pfm because those are only for the pfm control?s functions. * the electrical characteristics above ar e when the other channel is in stop mode. parameter symbol conditions min. typ. max. units circuit output voltage ? v dcout when connected to external components, v in1 =v en1 =5.0v,i out1 =30ma 1.764 1.800 1.836 v ? operating voltage range ? v in1 ? 2.7 - 6.0 v ? maximum output current i out1max when connected to external components, v in1 =dcout(e)v+2.0v,v en1 =1.0v (*8) 600 - - ma ? voltage ? v uvlo v en1 =v in1 | dcout=0v, voltage which lx pin holding ?l? level (*1, *10) ? 1.00 1.40 1.78 v ? ?
?
e ? - 22 50 supply current ? i dd v in1 =v en1 =5.0v,dcout=dcout(e)1.1v ?
?
e ? - 15 33 a ? ? stand-by current ? i stb v in1 =5.0v,v en1 =0v,dcout=dcout(e)1.1v - 0 1.0 a ? ? oscillation frequency f osc when connected to external components, v in1 =dcout(e)v+2.0v,v en1 =1.0v, i out1 =100ma 1020 1200 1380 khz ? pfm switching current i pfm when connected to external components, v in1 =dcout(e)v+2.0v,v en1 =v in1 , i out1 =1ma (*11) 120 160 200 ma ? pfm duty limit d limit_pfm v en1 =v in1 =(c-1)i out1 =1ma (*11) - 200 % ? maximum duty ratio d max v in1 =v en1 =5.0v,dcout=dcout(e)0.9v 100 - - % ? minimum duty ratio d min v in1 =v en1 =5.0v,dcout=dcout(e)1.1v - - 0 % ? efficiency effi when connected to external components, v en1 =v in1 1 dcout(e)+1.2v (*7) , i out1 =100ma ? - 92 - % ? lx sw "h" on resistance 1 rl x h v in1 =v en1 =5.0v,dcout=0v,il x =100ma (*3) - 0.35 0.55 ? ? lx sw "h" on resistance 2 rl x h v in1 =v en1 =3.6v,dcout=0v,il x =100ma (*3) - 0.42 0.67 ? ? lx sw "l" on resistance 1 rl x l v in1 =v en1 =5.0v (*4) - 0.45 0.66 ? lx sw "l" on resistance 2 rl x l v in1 =v en1 =3.6v (*4) - 0.52 0.77 ? lx sw "h" leak current (*5) ? i leakh v in1 =dcout=5.0v,v en1 =0v,l x =0v - 0.01 1.0 a ? ? current limit (*9) ? i lim v in1 =v en1 =5.0v,dcout=dcout(e)0.9v 900 1050 1350 ma ? output voltage temperature characteristics ? dcout / (dcout ~ topr) i out1 =30ma, -40 ?? topr ? 85 ? - 100 - ppm/ ? ? en1 "h" level voltage v en1h dcout=0v, applied voltage to v en1, voltage changes lx to ?h? level (*10) ?? 0.65 - 6.0 v ? en1 "l" level voltage v en1l dcout=0v, applied voltage to v en1, voltage changes lx to ?l? level (*10) ?? v ss - 0.25 v ? en1 "h" current i en1h v in1 =v en1 =5.0v,dcout=0v - 0.1 - 0.1 a ? ? en1 "l" current i en1l v in1 =5.0v,v en1 =0v,dcout=0v - 0.1 - 0.1 a ? ? soft start time t ss when connected to external components, v en1 =0v v in1 , i out1 =1ma - 0.25 0.40 ms ? latch time t lat v in1 =v en1 =5.0v, dcout=0.8
?e short lx at 1 ? resistance (*6) ? 1.0 - 20 ms ? short protection threshold voltage ? v short sweeping dcout, v in1 =v en1 =5.0v, short lx at 1 ? resistance, dcout voltage which lx becomes ?l? level within 1ms ? 0.675 0.900 1.150 v ? c l discharge ? r dchg v in1 =5.0v, l x =5.0v,v en1 =0v, dcout=open 200 300 450 ? ?
8/49 XCM519 series electrical characteristics (continued) XCM519xd 1ch (dc/dc block) dcout=1.8v, f osc =3.0mhz, ta=25 test conditions: unless otherwise stated, v in1 =5.0v, v dcout(e) = nominal voltage note: *1: including hysteresis width of operating voltage. *2: effi = { ( output voltage output current ) ?? ( input voltage input current) } 100 *3: on resistance (
)= (v in - lx pin measurement voltage) ?? 100ma *4: design value *5: when temperature is high, a current of approximately 10 a (maximum) may leak. *6: time until it short-circuits dcout with gnd via 1
of resistor from an operational state and is set to lx=0v from current limit pulse generating. *7: v dcout (e) +1.2v<2.7v, v in =2.7v. *8: when the difference between the input and the output is small, some cycles may be skipped completely before current maximiz es. if current is further pulled from this state, output vo ltage will decrease because of p-ch driver on resistance. *9: current limit denotes the level of detection at peak of coil current. *10: "h" 1 v in ? v in - 1.2v, "l" 1 + 0.1v ? - 0.1v *11: XCM519a series exclude i pfm and d limt_pfm because those are only for the pfm control?s functions. * the electrical characteristics above ar e when the other channel is in stop mode. parameter symbol conditions min. typ. max. units circuit output voltage ? v dcout when connected to external components, v in1 =v en1 =5.0v, i out1 =30ma ? 1.764 1.800 1.836 v ? operating voltage range ? v in1 ? 2.7 - 6.0 v ? maximum output current i out1max when connected to external components, v in1 =dcout(e)v+2.0v,v en1 =1.0v (*8) ? 600 - - ma ? voltage ? v uvlo v en1 =v in1 | dcout=0v, voltage which lx pin holding ?l? level (*1, *10) ? 1.00 1.40 1.78 v ? ?
?e - 46 65 supply current ? i dd v in1 =v en1 =5.0v,dcout=dcout(e)1.1v ?
? e - 21 35 a ? ? stand-by current ? i stb v in1 =5.0v,v en1 =0v, dcout=dcout(e)1.1v - 0 1.0 a ? ? oscillation frequency f osc when connected to external components, v in1 =dcout(e)v+2.0v, v en1 =1.0v, i out1 =100ma ? 2550 3000 3450 khz ? pfm switching current i pfm when connected to external components, v in1 =dcout(e)v+2.0v, v en1 =v in1 , i out1 =1ma (*11) ? 170 220 270 ma ? pfm duty limit d limit_pfm v en1 =v in1 =(c-1)i out1 =1ma (*11) - 200 300 % ? maximum duty ratio d max v in1 =v en1 =5.0v, dcout=dcout(e)0.9v 100 - - % ? minimum duty ratio d min v in1 =v en1 =5.0v, dcout=dcout(e)1.1v - - 0 % ? efficiency effi when connected to external components, v en1 =v in1 1 dcout(e)+1.2v (*7) ,i out1 =100ma ? - 86 - % ? lx sw "h" on resistance 1 rl x h v in1 =v en1 =5.0v, dcout=0v, il x =100ma (*3) - 0.35 0.55 ? ? lx sw "h" on resistance 2 rl x h v in1 =v en1 =3.6v, dcout=0v, il x =100ma (*3) - 0.42 0.67 ? ? lx sw "l" on resistance 1 rl x l v in1 =v en1 =5.0v (*4) - 0.45 0.66 ? lx sw "l" on resistance 2 rl x l v in1 =v en1 =3.6v (*4) - 0.52 0.77 ? lx sw "h" leak current (*5) ? i leakh v in1 =dcout=5.0v,v en1 =0v, l x =0v - 0.01 1.0 a ? ? current limit (*9) ? i lim v in1 =v en1 =5.0v, dcout=dcout(e)0.9v 900 1050 1350 ma ? output voltage temperature characteristics ? dcout / (dcout ~ topr) i out1 =30ma -40 ?? topr ? 85 ?? - 100 - ppm/ ? ? en1 "h" level voltage v en1h dcout=0v, applied voltage to v en1, voltage changes lx to ?h? level (*10) 0.65 - 6.0 v ? en1 "l" level voltage v en1l dcout=0v, applied voltage to v en1, voltage changes lx to ?l? level (*10) v ss - 0.25 v ? en1 "h" current i en1h v in1 =v en1 =5.0v, dcout=0v - 0.1 - 0.1 a ? ? en1 "l" current i en1l v in1 =5.0v,v en1 =0v, dcout=0v - 0.1 - 0.1 a ? ? soft start time t ss when connected to external components, v en1 =0v v in1 , i out1 =1ma - 0.32 0.50 ms ? latch time t lat v in1 =v en1 =5.0v, dcout=0.8
?e short lx at 1 ? resistance (*6) ? 1.0 - 20 ms ? short protection threshold voltage ? v short sweeping dcout, v in1 =v en1 =5.0v, short lx at 1 ? resistance, dcout voltage which lx becomes ?l? level within 1ms ? 0.675 0.900 1.150 v ? c l discharge ? r dchg v in1 =5.0v, l x =5.0v, v en1 =0v, dcout=open 200 300 450 ? ?
9/49 x cm519 series electrical characteristics (continued) ? pfm switching current (i pfm ) by oscillation frequency and output voltage 1.2mhz (ma) setting voltage min. typ. max. v dcout(e) Q 1.2 140 180 240 1.2v v dcout(e) Q 1.75 130 170 220 1.8v Q v dcout(e) 120 160 200 3.0mhz (ma) setting voltage min. typ. max. v dcout(e) Q 1.2 190 260 350 1.2v v dcout(e) Q 1.75 180 240 300 1.8v Q v dcout(e) 170 220 270 ? measuring maximum i pfm limit, v in voltage f osc 1.2mhz 3.0mhz (c-1) v dcout(e) +0.5v v dcout(e) +1.0v minimum operating voltage is 2.7v ex.) although when v dcout(e) =1.2v, f osc =1.2mhz, (c-1)=1.7v the (c-1) becomes 2.7v because of the minimum operating voltage 2.7v. ? soft-start time chart (XCM519 xc/ XCM519xd series only) ? product series f osc output voltage min. typ. max. 1200khz 0.8 ? v dcout(e) <1.5 - 250 400 s ? 1200khz 1.5 ? v dcout(e) <1.8 - 320 500 s ? 1200khz 1.8 ? v dcout(e) <2.5 - 250 400 s ? XCM519ac 1200khz 2.5 ? v dcout(e) <4.0 - 320 500 s ? 1200khz 0.8 ? v dcout(e) <2.5 - 250 400 s ? XCM519bc 1200khz 2.5 ? v dcout(e) <4.0 - 320 500 s ? 3000khz 0.8 ? v dcout(e) <1.8 - 250 400 s ? XCM519xd 3000khz 1.8 ? v dcout(e) <4.0 - 320 500 s ?
10/49 XCM519 series electrical characteristics (continued) XCM519xx 2ch (regulator block) parameter symbol conditions min. typ. max. units circuit bias voltage (*1) v bias v en2 =v bias ,v in2 =v rout(t) +0.3v 2.5 - 6.0 v input voltage (*2) v in2 v bias =v en2 =3.6v 1.0 - 3.0 v -0.02 v out(t) (*4) +0.02 output voltage v rout(e) (*3) v bias =v en2 =3.6v,v in2 =v rout(t) +0.3v, ir out =1ma e-0 (*5) v maximum output current1 i outmax1 v en2 =v bias ,v bias -v rout(t) ? 1.2v v in2 =v rout(t) +0.5v 200 - - ma ? maximum output current2 i outmax2 v en2 =v bias ,v bias -v rout(t) ? 1.3v v in2 =v rout(t) +0.5v 300 - - ma ? maximum output current3 i outmax3 v en2 =v bias ,v bias -v rout(t) ? 1.5v v in2 =v rout(t) +0.5v 400 - - ma ? load regulation vrout v bias =v en2 =3.6v, v in2 =v rout(t) +0.3v, 1ma ? i vrout ? 100ma - 8 17 mv dropout voltage1 vdif1 (*7) v en2 =v bias , i out =100ma e-1 (*6) mv ? dropout voltage2 vdif2 (*7) v en2 =v bias , i out =200ma e-2 (*6) mv ? dropout voltage3 vdif3 (*7) v en2 =v bias , i out =300ma e-3 (*6) mv ? dropout voltage4 vdif4 (*7) v en2 =v bias , i out =400ma e-4 (*6) mv ? supply current 1 i bias v bias =v en2 =3.6v,v in2 =v rout(t) +0.3v v rout(t) =open 8 25 45 a ? supply current 2 i in2 v bias =v en2 =3.6v, v in2 =v rout(t) +0.3v v rout(t) =open - 1.0 2.5 a ? v rout(t) ? 0.95v,v bias =v en2 =3.6v, v in2 =v rout(t) +0.05v, v rout =v rout(t) - 0.05v bias current (*10) i biasmax v rout(t) ? 0.95v,v bias =v en2 =3.6v, v in2 =1.0v, v rout =v rout(t) - 0.05v - 1.0 2.5 ma ? stand-by current 1 i bias_stb v bias =6.0v,v in2 =3.0v, v en2 =v ss2 - 0.01 0.10 a ? stand-by current 2 i in_stb v bias =6.0v,v in2 =3.0v, v en2 =v ss2 - 0.01 0.35 a ? v rout(t) ? 1.3v v rout(t) +1.2v ? v bias ? 6.0v, v in2 =v rout(t) +0.3v, v en2 =v bias , i out =1ma bias regulation v rout / ( v bias ~ v rout ) v rout(t) ? 1.3v 2.5v ? v bias ? 6.0v, v in2 =v rout(t) +0.3v, v en2 =v bias , i out =1ma - 0.01 0.3 %/v ? v rout(t) ? 0.90v,v rout(t) +0.1v ? v in2 ? 3.0v, v bias =v en2 =3.6v,i out =1ma input regulation v rout / ( v in2 ~ v rout ) v rout(t) ? 0.90v,1.0v ? v in2 ? 3.0v v bias =v en2 =3.6v,i out =1ma - 0.01 0.1 %/v ? bias voltage uvlo v bias_uvlo v en2 =v bias ,v in2 =v rout(t) +0.3v,i out =1ma 1.37 2.0 2.5 v ? input voltage uvlo v in_uvlo v bias =v en2 =3.6v, i vrout =1ma 0.07 0.4 0.6 v ? v bias ripple rejection v bias_psrr v bias =3.6v dc +0.2vp-p ac ,v in2 =v rout(t) +0.3v, i out =30ma,f=1khz - 40 - db ? v in2 ripple rejection v in_psrr v in2 =v out(t) +0.3v dc +0.2vp-p ac , v bias =3.6v, i out =30ma,f=1khz - 60 - db ?
11/49 x cm519 series electrical characteristics (continued) ? XCM519xx 2ch (regulator block) (continued) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? parameter symbol conditions min. typ. max. units circuit output voltage temperature characteristics v rout / ( topr ~ v rout ) v bias =v en2 =3.6v, v in2 =v rout(t) +0.3v , i out =30ma, - 40 ?? topr ? 85 ? - ? 100 - ppm/ ? ? limit current i lim v rout =v rout(t) 0.95, v bias =v en2 =3.6v, v in2 =v rout(t) +0.3v 400 - - ma ? short current i short v bias =v en2 =3.6v, v in2 =v rout(t) +0.3v, v rout =0v - 80 - ma ? thermal shutdown detect temperature t tsd junction temperature - 150 - ? ? thermal shutdown release temperature t tsr junction temperature - 125 - ? ? tsd hysteresis width t tsd t tsr - 25 - ? ? cl auto-discharge resistance ? r dchg v bias =3.6v, v in2 = v rout(t) +0.3v, v en2 = v ss v rout =v rout(t) 290 430 610
? ? en2 "h" level voltage v en2h v bias =3.6v,v in2 =v rout(t) +0.3v 0.75 - 6.0 v ? en2 "l" level voltage v en2l v bias =3.6v,v in2 =v rout(t) +0.3v - - 0.16 v ? en2 "h" level current i en2h v bias =v en2 =6.0v, v in2 =v rout(t) +0.3v -0.1 - 0.1 a ? en2 "l" level current i en2l v bias =6.0v, v en2 =v ss, v in2 =v rout(t) +0.3v -0.1 - 0.1 a ? soft start time (*11) t ss v bias =3.6v z v in2 =v rout(t) +0.3v z i out =1ma v en2 =0v 3.6v 100 - 410 s ? e-0 output voltage (v) nominal output voltage (v) v rout v rout(t) min. max. 0.70 0.680 0.720 0.75 0.730 0.770 0.80 0.780 0.820 0.85 0.830 0.870 0.90 0.880 0.920 0.95 0.930 0.970 1.00 0.980 1.020 1.05 1.030 1.070 1.10 1.080 1.120 1.15 1.130 1.170 1.20 1.180 1.220 1.25 1.230 1.270 e-0 output voltage (v) nominal output voltage (v) v rout v rout(t) min. max. 1.30 1.280 1.320 1.35 1.330 1.370 1.40 1.380 1.420 1.45 1.430 1.470 1.50 1.480 1.520 1.55 1.530 1.570 1.60 1.580 1.620 1.65 1.630 1.670 1.70 1.680 1.720 1.75 1.730 1.770 1.80 1.780 1.820 output voltage chart note: * 1: please use bias voltage v bias within the range v bias ?v rout(t) ? 0.9v * 2: please use input voltage v in within the range v in ? v bias * 3: v rout(e) : effective output voltage * 4: v rout(t) : specified output voltage * 5: e-0 = please refer to the table named output voltage chart * 6: e-1 = please refer to the table named dropout voltage chart * 7: vdif={v in21 (*8) -v rout1 (*9) } * 8: v in21 : the input voltage when v out1 appears as input voltage is gradually decreased. * 9: v rout1 : a voltage equal to 98% of the output voltage while maintaining an amply stabilized output voltage when v bias <3.0v at v in2 = v bias, v bias ? 3.0v at v in2 =v bias input to the v bias pin. *10 : i biasmax : a supply current at the v bias pin providing for the output current (i vrout ) . *11: t ss : time that v rout becomes more than v rout(e) 0.9v after the en2 pin is input 0.75v as en2 ?h? level voltage. * the electrical characteri stics above are when the other channel is in stop mode.
12/49 XCM519 series e-1 dropout voltage1 (mv) vdif1 v bias =3.0(v) v bias =3.3(v) v bias =3.6(v) v bias =4.2(v) v bias =5.0(v) nominal output voltage (v) vdif (mv) vdif (mv) vdif (mv) vdif (mv) vdif (mv) v rout(t) vgs (*1) (v) typ. max. vgs (v) typ. max. vgs (v) typ. max. vgs (v) typ. max. vgs (v) typ. max. 0.70 2.30 40 300 2.60 35 300 2.90 33 300 3.50 30 300 4.30 27 300 0.75 2.25 250 2.55 250 2.85 250 3.45 250 4.25 250 0.80 2.20 41 200 2.50 36 200 2.80 34 200 3.40 31 200 4.20 28 200 0.85 2.15 150 2.45 150 2.75 150 3.35 150 4.15 150 0.90 2.10 42 100 2.40 38 100 2.70 34 100 3.30 31 100 4.10 28 100 0.95 2.05 2.35 2.65 3.25 50 4.05 50 1.00 2.00 43 68 2.30 40 61 2.60 35 56 3.20 32 49 4.00 28 44 1.05 1.95 2.25 2.55 3.15 3.95 1.10 1.90 46 72 2.20 41 63 2.50 36 58 3.10 32 50 3.90 29 45 1.15 1.85 2.15 2.45 3.05 3.85 1.20 1.80 48 75 2.10 42 65 2.40 38 59 3.00 32 51 3.80 29 46 1.25 1.75 2.05 2.35 2.95 3.75 1.30 1.70 51 81 2.00 43 68 2.30 40 61 2.90 33 52 3.70 29 47 1.35 1.65 1.95 2.25 2.85 3.65 1.40 1.60 54 87 1.90 46 72 2.20 41 63 2.80 34 53 3.60 30 47 1.45 1.55 1.85 2.15 2.75 3.55 1.50 1.50 57 92 1.80 48 75 2.10 42 65 2.70 34 54 3.50 30 48 1.55 1.45 61 94 1.75 2.05 2.65 3.45 1.60 1.40 63 97 1.70 51 81 2.00 43 68 2.60 35 56 3.40 31 48 1.65 1.35 67 104 1.65 1.95 2.55 3.35 1.70 1.30 70 113 1.60 54 87 1.90 46 72 2.50 36 58 3.30 31 49 1.75 1.25 74 131 1.55 1.85 2.45 3.25 1.80 1.20 79 154 1.50 57 92 1.80 48 75 2.40 38 59 3.20 32 49 dropout voltage chart *1): vgs is a gate ?source voltage of the driver transistor that is defined as the value of v bias - v rout (t) .
13/49 x cm519 series e-2 dropout voltage 2 (mv) vdif2 v bias =3.0(v) v bias =3.3(v) v bias =3.6(v) v bias =4.2(v) v bias =5.0(v) nominal output voltage (v) vdif (mv) vdif (mv) vdif (mv) vdif (mv) vdif (mv) v rout(t) vgs (*1) (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max 0.70 2.30 81 300 2.60 74 300 2.90 68 300 3.50 62 300 4.30 57 300 0.75 2.25 250 2.55 250 2.85 250 3.45 250 4.25 250 0.80 2.20 85 200 2.50 76 200 2.80 70 200 3.40 63 200 4.20 58 200 0.85 2.15 150 2.45 150 2.75 150 3.35 150 4.15 150 0.90 2.10 88 131 2.40 78 117 2.70 72 110 3.30 63 100 4.10 58 100 0.95 2.05 2.35 2.65 3.25 4.05 1.00 2.00 90 139 2.30 81 123 2.60 74 111 3.20 64 98 4.00 58 88 1.05 1.95 2.25 2.55 3.15 3.95 1.10 1.90 96 146 2.20 85 127 2.50 76 114 3.10 65 101 3.90 59 90 1.15 1.85 2.15 2.45 3.05 3.85 1.20 1.80 101 154 2.10 88 131 2.40 78 117 3.00 67 103 3.80 59 91 1.25 1.75 2.05 2.35 2.95 3.75 1.30 1.70 108 170 2.00 90 139 2.30 81 123 2.90 68 106 3.70 60 92 1.35 1.65 1.95 2.25 2.85 3.65 1.40 1.60 115 179 1.90 96 146 2.20 85 127 2.80 70 108 3.60 61 93 1.45 1.55 1.85 2.15 2.75 3.55 1.50 1.50 122 192 1.80 101 154 2.10 88 131 2.70 72 110 3.50 62 94 1.55 1.45 129 197 1.75 2.05 2.65 3.45 1.60 1.40 135 206 1.70 108 170 2.00 90 139 2.60 74 111 3.40 63 95 1.65 1.35 145 223 1.65 1.95 2.55 3.35 1.70 1.30 154 248 1.60 115 179 1.90 96 146 2.50 76 114 3.30 63 97 1.75 1.25 165 293 1.55 1.85 2.45 3.25 1.80 1.20 175 353 1.50 122 192 1.80 101 154 2.40 78 117 3.20 64 98 dropout voltage chart (continued) *1): vgs is a gate ?source voltage of the driver transistor that is defined as the value of v bias - v rout (t) .
14/49 XCM519 series e-3 dropout voltage 3 (mv) vdif3 v bias =3.0(v) v bias =3.3(v) v bias =3.6(v) v bias =4.2(v) v bias =5.0(v) nominal output voltage (v) vdif(mv) vdif(mv) vdif(mv) vdif(mv) vdif(mv) v vrout(t) vgs (*1) (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max 0.70 2.30 130 300 2.60 115 300 2.90 107 300 3.50 95 300 4.30 89 300 0.75 2.25 250 2.55 250 2.85 250 3.45 250 4.25 250 0.80 2.20 134 200 2.50 117 200 2.80 109 200 3.40 96 200 4.20 90 200 0.85 2.15 2.45 2.75 3.35 150 4.15 150 0.90 2.10 138 204 2.40 119 181 2.70 111 167 3.30 97 148 4.10 90 132 0.95 2.05 2.35 2.65 3.25 4.05 1.00 2.00 145 216 2.30 130 190 2.60 115 170 3.20 98 151 4.00 91 134 1.05 1.95 2.25 2.55 3.15 3.95 1.10 1.90 153 227 2.20 134 197 2.50 117 176 3.10 101 153 3.90 92 137 1.15 1.85 2.15 2.45 3.05 3.85 1.20 1.80 161 239 2.10 138 204 2.40 119 181 3.00 105 155 3.80 93 139 1.25 1.75 2.05 2.35 2.95 3.75 1.30 1.70 173 264 2.00 145 216 2.30 130 190 2.90 107 159 3.70 93 140 1.35 1.65 1.95 2.25 2.85 3.65 1.40 1.60 184 289 1.90 153 227 2.20 134 197 2.80 109 163 3.60 94 141 1.45 1.55 1.85 2.15 2.75 3.55 1.50 1.50 196 313 1.80 161 239 2.10 138 204 2.70 111 167 3.50 95 142 1.55 1.45 209 323 1.75 2.05 2.65 3.45 1.60 1.40 222 344 1.70 173 264 2.00 145 216 2.60 115 170 3.40 96 145 1.65 1.35 239 388 1.65 1.95 2.55 3.35 1.70 1.30 256 442 1.60 184 289 1.90 153 227 2.50 117 176 3.30 97 148 1.75 1.25 1.55 1.85 2.45 3.25 1.80 1.20 - - 1.50 196 313 1.80 161 239 2.40 119 181 3.20 98 151 dropout voltage chart (continued) *1): vgs is a gate ?source voltage of the driver transistor that is defined as the value of v bias - v rout (t) .
15/49 x cm519 series e-4 dropout voltage 4(mv) vdif4 v bias =3.0(v) v bias =3.3(v) v bias =3.6(v) v bias =4.2(v) v bias =5.0(v) nominal output voltage (v) vdif(mv) vdif(mv) vdif(mv) vdif(mv) vdif(mv) v vrout(t) vgs (*1) (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max vgs (v) typ max 0.70 2.30 189 300 2.60 157 300 2.90 146 300 3.50 129 300 4.30 116 300 0.75 2.25 2.55 2.85 3.45 250 4.25 250 0.80 2.20 195 277 2.50 164 272 2.80 150 250 3.40 131 246 4.20 118 231 0.85 2.15 2.45 2.75 3.35 4.15 0.90 2.10 201 277 2.40 170 272 2.70 153 250 3.30 134 246 4.10 119 231 0.95 2.05 2.35 2.65 3.25 4.05 1.00 2.00 206 277 2.30 189 272 2.60 157 250 3.20 136 246 4.00 121 231 1.05 1.95 2.25 2.55 3.15 3.95 1.10 1.90 218 277 2.20 195 272 2.50 164 250 3.10 139 246 3.90 125 231 1.15 1.85 227 2.15 272 2.45 250 3.05 246 3.85 231 1.20 1.80 231 334 2.10 201 277 2.40 170 248 3.00 142 215 3.80 128 189 1.25 1.75 2.05 2.35 2.95 3.75 1.30 1.70 248 376 2.00 206 296 2.30 189 255 2.90 146 219 3.70 128 191 1.35 1.65 1.95 2.25 2.85 3.65 1.40 1.60 264 418 1.90 218 315 2.20 195 266 2.80 150 224 3.60 129 193 1.45 1.55 1.85 2.15 2.75 3.55 1.50 1.50 281 460 1.80 231 334 2.10 201 277 2.70 153 228 3.50 129 195 1.55 1.45 1.75 2.05 2.65 3.45 1.60 1.40 - - 1.70 248 376 2.00 206 296 2.60 157 234 3.40 131 198 1.65 1.35 1.65 1.95 2.55 3.35 1.70 1.30 - - 1.60 264 418 1.90 218 315 2.50 164 241 3.30 134 202 1.75 1.25 1.55 1.85 2.45 3.25 1.80 1.20 - - 1.50 281 460 1.80 231 334 2.40 170 248 3.20 136 205 dropout voltage chart (continued) *1): vgs is a gate ?source voltage of the driver transistor that is defined as the value of v bias - v rout (t) .
16/49 XCM519 series typical application circuit operational explanation ? dc/dc block the dc/dc block of the XCM519 series consis ts of a reference voltage source, ramp wave circuit, error amplifier, pwm comparator, phase compensation circuit, outpu t voltage adjustment resistors, p-channel mosfet driver transistor, n-channel mosfet switching transistor for the synchronous switch, curr ent limiter circuit, uvlo circ uit and others. (see the block diagram above.) ? the series ics compare, using the error amp lifier, the voltage of the internal voltage reference source with the feedback volta ge from the dcout pin through split resist ors, r1 and r2. phase compensation is performed on the resulting error amplifier output, to input a signal to the pwm com parator to determine the turn-on time dur ing pwm operation. the pwm comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting output to the buffer dr iver circuit to cause the lx pin to output a switching duty cycle. this process is continuously performed to ensure stable output voltage. the curr ent feedback circuit monitors the p-channel mos driver transistor current for each switching operation, and modulates t he error amplifier output signal to provide multiple feedback signals. this enables a stable feedback loop even when a lo w esr capacitor such as a cera mic capacitor is used ensuring stable output voltage. ? the reference voltage source provides the reference voltage to ensure stable output voltage of the dc/dc converter. ? ? the ramp wave circuit determines switching frequency. the frequenc y is fixed internally and can be selected from 1.2mhz or 3.0mhz. clock pulses generated in this circuit are used to produce ramp waveforms needed for pwm operation, and to synchronize all the internal circuits. ? the error amplifier is designed to monitor output voltage. t he amplifier compares the reference voltage with the feedback voltage divided by the internal split resistors, r1 and r2. when a voltage is lower than the re ference voltage is fed back, th e output voltage of the error amplifier increa ses. the gain and frequency characteristi cs of the error amplifier output are fixe d internally to deli ver an optimized signal to the mixer. ? ? dc/dc block ? f osc =3.0mhz l : 1.5 h (nr3015 taiiyo yuden) cin1 : 10 f (ceramic) cl1 : 10 f (ceramic) cbias : 1 f (ceramic) cin2 : 1 f (ceramic) cl2 : 4.7 f (ceramic) ? ? dc/dc block ? f osc =1.2mhz l : 4.7 h (nr4018 taiiyo yuden) cin1 : 10 f (ceramic) cl1 : 10 f (ceramic) cbias : 1 f (ceramic) cin2 : 1 f (ceramic) cl2 : 4.7 f (ceramic) vin l c in1 c bias 1 2 3 4 9 10 11 12 avss 5 6 8 7 lx dcout pvss en1 vin1 vin2 vss2 vrout en2 vbias nc c in2 c l1 c l2 en2 vrout en1 dcout
17/49 x cm519 series ? ? operational explanation (continued) ? the current limiter circuit of the XCM519 series monitors th e current flowing through the p-channel mos driver transistor connected to the lx pin, and features a combination of the current limit mode and the operation suspension mode. ? ?? when the driver current is greater than a specific le vel, the current limit f unction operates to turn off the pulses from the l x pin at any given timing. ?? when the driver transistor is turned off, the limiter circuit is then released from the cu rrent limit det ection state. ?? at the next pulse, the driver transistor is turned on. however, the transistor is immediately tu rned off in the case of an ove r current state. ?? when the over current state is eliminated, the ic resumes its normal operation. the ic waits for the over current state to end by repeating the steps ?? through ? . if an over current state continues for a few ms and the above three steps are repeatedly performed, the ic performs the function of latchi ng the off state of the driver transistor, and goes into operation suspension mode. once th e ic is in suspension mode, operations can be resumed by either turning the ic off via the ce/mod e pin, or by restoring power to the v in pin. the suspension mode does not mean a complete shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry remains in operation. the current limit of the XCM519 series can be set at 1050ma at typical. besides, ca re must be taken when laying out the pc board, in order to prevent miss -operation of the current limit m ode. depending on the state of the pc board, latch time may become longer and latch operation may not work. in order to avoi d the effect of noise, the board should be laid out so that input capacitors are placed as close to the ic as possible. ? ? ? ? ? ? the short-circuit protection circuit monitors the internal r1 and r2 divider voltage from the dcout pin. in case where output is accidentally shorted to the ground and when the fb point voltage decreases less than half of the reference voltage (vref) and a current more than the i lim flows to the driver transistor, the s hort-circuit protection quickly operates to turn off and to latch the driver transistor. in latch state, the operation can be resumed by either turning the ic off and on via the en1 pin, or by restoring power supply to the v in1 pin. when sharp load transient happens, a voltage drop at t he dcout pin is propagated to fb point through c fb , as a result, short circuit protection may operate in the voltage higher than 1/2 v out voltage. ? when the v in1 pin voltage becomes 1.4v or lower, t he p-channel output driver transistor is forced off to prevent false pulse output caused by unstable operation of the internal circuitry. when the v in1 pin voltage becomes 1.8v or higher, switching operation takes place. by releasing the uvlo function, the ic performs the soft start function to init iate output startup operation. the soft start func tion operates even when the v in pin voltage falls momentarily belo w the uvlo operating voltage. the uvlo circuit does not cause a complete shutdown of the ic, but causes puls e output to be suspend ed; therefore, the internal circuitry remains in operation. ? ? ? ? ? ? ? limit ? #ms limit ? #ms
18/49 XCM519 series ? ? operational explanation (continued) ? in the pfm control operation, until coil cu rrent reaches to a specified level (d limit_ pfm ), the ic keeps the p-ch mosfet on. in this case, on-time (t on ) that the p-ch mosfet is kept on c an be given by the following formula. t on = l i pfm (v in1 v dcout ) i pfm ? ? in the pfm control operati on, the pfm duty limit (d limt_pfm ) is set to 200% (typ.). therefor e, under the condit ion that the duty increases (e.g. the condition that the step-down ratio is sma ll), it?s possible for p-ch mosfet to be turned off even when coil current doesn?t reach to i pfm . ? i pfm ? ? ? c l high speed discharge ? XCM519xc/ XCM519xd series can quickly discharge the electric charge at the output capacitor (c l ) when a low signal to the ce pin which enables a whole ic circuit put into off state, is inputted via the n-channel transistor located between the l x pin and the v ss pin. when the ic is disabled, elec tric charge at the output capacitor (c l ) is quickly discharged so that it may avoid application malfunction. discharge ti me of the output capacitor (c l ) is set by the c l auto-discharge resistance (r) and the output capacitor (c l ). by setting time constant of a c l auto-discharge resistance value [r] and an output capacitor value (c l ) as ( =c x r), discharge time of the output volt age after discharge via the n channel transistor is calculated by the following formula. v = v dcout(t) e -t / or t = ln ( v / v dcout(t) ) v : output voltage after discharge v dcout (t) : output voltage t: discharge time : c r c= capacitance of output capacitor (c l ) r= c l auto-discharge resistance output voltage dischage characteristics rdischg = 300 typ discharge time t (ms) 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 cl=10uf cl=20uf cl=50uf ipfm ton lx i lx i pfm 0ma ipfm i pfm 0ma lx i lx fosc ipfm pfm duty limit
19/49 x cm519 series ? operational explanation (continued) ? voltage regulator block ? the voltage divided by resistors r1 & r2 is compared with the in ternal reference voltage by the error amplifier. the n-channel mosfet which is connected to the v rout pin is then driven by the subsequent ou tput signal. the outpu t voltage at the v rout pin is controlled & stabilized by a sy stem of negative feedback. v bias pin is power supply pin for output voltage control circuit, pr otection circuit and ce circuit. when output current increase, the v bias pin supplies output current also. v in2 pin is connected to a driver transistor and provides output current. in order to obtain high efficient output current thr ough low on-resistance, please take enough vgs (=v bias ? v rout (t) ) of the driver transistor. output current triggers operat ion of constant current limiter and fold -back circuit, heat generation triggers opera tion of thermal shutdown circuit, the driver transistor circuit is forced off when v bias or v in2 voltage goes lower than uvlo voltage. further, the ic's internal circuitry can be shutdown via the en2 pin's signal. ? ? figure 1: xc6601b series ? with the XCM519 series, a stable output vo ltage is achievable even if used with lo w esr capacitors, as a phase compensation circuit is built-in. the output capacitor (c l2 ) should be connected as close to v rout pin and v ss pin to obtain stable phase compensation. values required for the phase compensation are as the table below. for a stable power input, please connect an bias capacitor (c bias ) of 1.0 f between the v bias pin and the v ss pin. also, please connect an input capacitor (c in2 ) of 1.0 f between the v in2 pin and the v ss pin. in order to ensure the stable phase compensation while avoiding run-out of values, please use the capacitor (c bias , c in2 , c l2 ) which does not depend on bias or temperature too much. the table below shows recommended values of c bias , c in , c l . ? ? recommended values of c bias, c in2, c l2 bias capacitor input capacitor output capacitor nominal voltage c bias c in2 c l2 0.7v 1.8v c bias =1.0 f c in2 =1.0 f c l2 =4.7 f
20/49 XCM519 series operational explanation (continued) with the XCM519, the inrush current from v in2 to v rout for charging c l at start-up can be reduced and makes the v in2 stable. the soft-start time is optimized to 240 a (typ.) at v rout =1.2v internally. soft-start time is defined as the v rout reaches 90% of v rout (e) from the time when ce h threshold 0.75v is input to the ce pin. < c l high speed auto-discharge > ? XCM519 series can quickly discharge the el ectric charge at the output capacitor (c l ) when a low signal to the en2 pin which enables a whole ic circuit put into off state, is i nputted via the n-channel trans istor located between the v rout pin and the v ss pin. when the ic is disabled, electr ic charge at the output capacitor (c l ) is quickly discharged so that it could avoids malfunction. at that time, cl discharge resistance is depended on a bias voltage. discharge time of the output capacitor (c l ) is set by the c l auto-discharge resistance (r) and the output capacitor (c l ). by setting time constant of a c l auto-discharge resistance value [r] and an output capacitor value (c l ) as ( =c x r), the output voltage after discharge via the n channel transistor is calculated by the following formulas. ? ? v = v rout(e) x e ?t/ , or = ln v rout(e) / v v : output voltage after discharge, v rout(e) : output voltage, t: discharge time, : c l auto-discharge resistance r output capacitor (c l ) value c ? the XCM519 series? fold-back circuit operates as an output curr ent limiter and a short protecti on of the output pin. when the load current reaches the current limit level, the fixed current limiter circuit operates and ou tput voltage drops. when the out put pin is shorted to the v ss level, current flows about 50ma. ? when the junction temperature of t he built-in driver transistor reaches the temperature limit level (150 ? typ.), the thermal shutdown circuit operates and the driver transistor will be set to off. the ic resumes its operation when the thermal shutdown function is released and the ic?s operation is automatically rest ored because the junction temper ature drops to the level of th e thermal shutdown release temperature (135 ? typ.). ? ? ? ? when the v bias pin voltage drops below 2.0v (typ.) or v in2 pin voltage drops below 0.4v (typ.), the output driver transistor is forced off by uvlo function to prevent false output caused by unstable operation of the internal circuitry. when the v bias pin voltage rise at 2.2v (typ.) or the v in2 pin voltage rises at 0.4v (typ. ), the uvlo function is releas ed. the driver transistor is turned in the on state and star t to operate voltage regulation. ? ? inrush current i rush (ma) en2 input voltage v en2 (v) figure2: example of the inrush current wave form at ic start-up. figure3: timing chart at ic start-up
21/49 x cm519 series operational explanation (continued) ? ? the ic internal circuitry can be shutdown via the signal from the en2 pin with the XCM519 series . in shutdown mode, output at the v rout pin will be pulled down to the v ss level via r1 & r2. however, as for the XCM519 series, the cl auto-discharge resistor is connected in parallel to r1 and r2 while the power supply is applied to the v in2 pin. therefore, time until the vrout pin reaches the v ss level becomes short. the en2 pin of XCM519 has pull-down circuitry so that en2 input current increase during ic oper ation. the en2 pin of XCM519 does not have pull-down circuitry so that logic is not fixed w hen the ce pin is open. if the en2 pin voltage is taken from v bias pin ? or v ss pin then logic is fixed and the ic will operate normally. ho wever, supply current may increase as a result of through current in the ic's internal circuitry when medium voltage is input. ? note on use when the dc/dc converter and t he vr are connected as v in1 =v bias , v dcout =v in2 , the following points should be noted. 1. when the dc/dc load is changed drastically during a light load of the vr, a fluctuation may happen in tenths of mv. this value can be reduced by increasing c l1 load capacitance at the dc/dc in order to reduce a voltage drop during load transient. 2. it is recommended that both c in1 and c bias are connected to each pin separately. when one capacitor is used instead of the two, this capacitor should be placed in 10 f or more as close as the vin1 and the pgnd (agnd) pins of the dc/dc circuit. please ensure it by testing on the actual product design. 3. it is recommended that both c l1 and c in2 are connected to each pin separately. wh en one capacitor is used instead of the two, this capacitor should be selected in 4.7 f or bigger. please ensure it by test ing on the actual product design. 4. c l2 of the vr is recommended 4.7 a. when larger value is used in c l2 , the larger value is also used in c l1 as in proportional. please be noted that when c l2 capacitance of the vr is getting lar ge, an inrush current increases at vr start-up, dc/dc short circuit protection starts to oper ate, as a result, the ic may happen to stop. 20s/div ? 50s/div 1ch:dc/dc vout:50mv/div 2ch:vr vout:50mv/div 4ch:vr iout:200ma/div 1ch:dc/dc vout:50mv/div 2ch:vr vout:50mv/div 4ch:vr iout:200ma/div 50us/div en2(5v/div) dcout(1v/div) vrout(1v/div) iin2(500ma/div) * vr inrush current i in2 makes dc/dc short-circuit protection to start, as a result, the ic may happen to stop. the left waver forms are taken at c l1 =10 , c l2 =10 f(in contrast to the recommended 4.7 f). however, it improves when c l1 =20 f.
22/49 XCM519 series note on use (continued) 5. when the input-output voltage differential is small in the dc/dc converter and heavy load condition, a duty cycle is getting large and keeps the 100% duty cycle in a several period cycles. at the time of duty cycle transit ion to 100% or from 100%, noise may appear on the voltage regulator output. please evaluat e this on the actual design board when the condition is in small input-output voltag e differential and heavy load. 6. when the load is changed at the dc/dc converter, ringing may happen in some lo ad conditions of dc/dc and vr at the timing of turn on and turn off. the ringing can be reduced by increasing c in1 capacitance or placing a resistor over 10k
between v in1 and v bias pins. 7. in order to turn off the input voltage, the en2 pin should be turned off first. if the input voltage is turned off with keep ing vr operation, the vrout voltage goes up instantaneously as a result of the vr bias voltage transient. 8. when the dcout pin is connected to the v in2 pin and the bias voltage (v bias ) is taken from the other power supply, en1 and en2 should be started up 10 s later than v bias . if en1 and en2 is turned on within 10 s, inrush current like 1a may happen which result in starting t he dc/dc short-circuit protection. 9. it is recommended to test this in the actual product design board. 1. the XCM519 series is designed for use with ceramic output capacitors. if, however, the potential difference is too large between the input voltage and the output vo ltage, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur on the output. if the input-out put potential difference is large, connect an electrolytic capacitor in parallel to compensa te for insufficient capacitance. 2. spike noise and ripple voltage arise in a switching regulato r as with a dc/dc converter. these are greatly influenced by external component selection, such as the coil inductance, capacitance values, and board layout of external components. once the design has been completed, verification with actual components should be done. 3. as a result of input-output voltage and load conditions, oscillation frequency goes to 1/2, 1/3, and continues, then a rippl e may increase. 4. when input-output voltage differential is large and light load conditions, a small duty cycle comes out. after that, 0%duty cycle may continue in several periods. 5. when input-output voltage di fferential is small and heavy load conditi ons, a large duty cycle comes out and may continues100% duty cycle in several periods. 6. with the ic, the peak current of the coil is controlled by the current limit circ uit. since the peak current increases whe n dropout voltage or load current is high, current limit starts operation, and this c an lead to instability. when peak current becomes high, please adjust the coil inductance value and fu lly check the circuit operation. in addition, please calculate the peak current according to the following formula: ipk = (v in1 -v dcout ) onduty /(2lf osc ) + i out l: coil inductance value f osc : oscillation frequency 200us/div vin(5v/div) dcout(500mv/div) vrout(500mv/div)
23/49 x cm519 series note on use (continued) 7. when the peak current which exceeds limit current flows within the specified time , the built-in p-ch driver transistor turn s off. during the time until it detects limit current and before the built-in transistor can be turned off, the current for limit curr ent flows; therefore, care must be tak en when selecting the rating for the external components such as a coil. 8. ? care must be taken when laying out the pc board, in order to prevent misoperation of the cu rrent limit mode. depending on the state of the pc b oard, latch time may become longer and latch operati on may not work. in order to avoid the effect of noise, the board should be laid out so that input capacitors are placed as close to the ic as possible. ? 9. ? use of the ic at voltages below the reco mmended voltage range may lead to instability. ? 10. this ic should be used within the stated absolute maxi mum ratings in order to prevent damage to the device. 11. when the ic is used in high temperature, output voltage may increase up to inpu t voltage level at no load because of the leak current of the driver transistor. ? 12. ? the current limit is set to 1350ma (max.) at typical. however, the current of 1350m a or more may flow. in case that the current limit functions while t he dcout pin is shorted to the gnd pin, when p-ch mosfet is on, the potential difference for input voltage will occur at both ends of a coil. for this, the time rate of coil current becomes large. by contrast, when n-ch mosfet is on, there is almost no potential difference at both ends of the coil since the dcout pin is shorted to the gnd pin. consequently, the time rate of coil current becomes quite small. according to t he repetition of this operation, and the delay time of the circuit, coil curr ent will be converged on a certain current va lue, exceeding the amount of current, which is supposed to be limited originally. even in this case, however, after the over current state continues for several ms, the circuit will be latched. a coil should be used within the stated absolute maximum rating in order to prevent damage to the device. ?? current flows into p- ch mosfet to reach the current limit (i lim ). ? the current of i lim or more flows since the delay time of the circuit o ccurs during from the detecti on of the current limit to off of p-ch mosfet. ? because of no potential difference at both ends of the coil, the time rate of coil current becomes quite small. ? lx oscillates very narrow pulses by the current limit for several ms. ? the circuit is latched, stopping its operation. ? ? 13. ? in order to stabilize v in1 ?s voltage level and oscillation frequency, we recommend that a by-pass capacitor (c in ) be connected as close as possible to the v in1 & v ss pins. ? 14. ? high step-down ratio and very light load may lead an intermittent oscillation. ? 15. ? during pwm / pfm automatic switching mode, operating may become unstable at transition to continuous mode. please verify with actual parts. ? ? ? lx il x il im limit > ms delay ms
24/49 XCM519 series ? note on use (continued) 16. ? please note the inductance value of the coil. the ic may enter unstable operation if the combin ation of ambient temperature, setting voltage, oscillation frequency, and l value are not adequate. in the operation range close to the maxi mum duty cycle, the ic may happen to ent er unstable output voltage operation even if using the l values listed below. ? ? ? ? 1. where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. please keep the resistance low between v bias , v in2 and v ss wiring in particular. 2. please wire the bias capacitor (c bias ), input capacitor (c in2 ) and the output capacitor (c l2 ) as close to the ic as possible. 3. capacitance values of these capacitors (c bias, c in2, c l2 ) are decreased by the influences of bias voltage and ambient temperature. care shall be taken for capacitor selection to ensure stability of phase compensation from the point of esr influence. 4. in case of the output capacitor more than c l =22 f is used, ringing of input current occurs when rising time. 5. v in2 and en2 should be applied at least 10 s after the bias voltage v bias reaches the requested voltage. if v in2 and en2 are applied within 10 s, inrush current like 1a may occurs. ? instructions of pattern layouts ? 1. ? please use this ic within the stated absolute maximum rati ngs. the ic is liable to malfunction should the ratings be exceeded. ? 2. ? in order to stabilize v in1 ~ v in2 ~ v bias ~ dcout k v rout voltage level, we recommend that a by-pass capacitor (c in1 ~ c in2 k c bias ~ c l1 ~ c l2 ) be connected as close as possible to the v in1 ~ v in2 ~ v bias ~ dcout k v rout and gnd k v ss pins. ? 3. please mount each external component as close to the ic as possible. ? 4. ? wire external components as close to the ic as possible and use thick, short connecting traces to reduce the circuit impedance. ? 5. v ss agnd ~ pgnd ~ v ss ground wiring is recommended to get large area. the ic may goes into unstable operation as a result of vss voltage level fluct uation during t he switching. 6. ? this series? internal driver transistors br ing on heat because of the output current (i out ) and on resistance of driver transistors. ?? l lx dcout en2 vrout vin2 en1 vbias vin1 cin1 cin2 cl2 cl1 l pgnd agnd vss cin3 ic the range of l value ? f osc v out l value 3.0mhz 0.8v ? v out <4.0v 1.0 h ? 2.2 h ? v out ? 2.5v 3.3 h ? 6.8 h ? 1.2mhz 2.5v ? v out 4.7 h ? 6.8 h ? *when a coil less value of 4.7 h is used at f osc =1.2mhz or when a coil less value of 1.5 h is used at f osc =3.0mhz, peak coil current more easily reach the current limit ilmi. in this case, it may happen that the ic can not provide 600ma output current. front back ceramic capacitor inductor
25/49 x cm519 series test circuits dcout lx agnd pgnd en1 vin1 vrout en2 vin2 vbias < circuit no.2 > 1uf a dcout lx en1 vin1 vrout vin2 vbias agnd pgnd en2 < circuit no.1 > external components l : 1.5h(nr3015) 3.0mhz 4.7h(nr4018) 1.2mhz cin : 4.7f(ceramic) cl :10f(ceramic) cl l cin a v wave form measure point < circuit no.3 > rpulldown 200 1f dcout lx en1 vin1 vrout vin2 vbias wave form measure point agnd pgnd en2 < circuit no.4 > v 100ma 1f dcout lx en1 vin1 vrout vin2 vbias agnd pgnd en2 < circuit no.6 > v ilim 1f dcout lx en1 vin1 vrout vin2 vbias wave form measure point agnd pgnd en2 < circuit no.5 > 1f dcout lx en1 vin1 vrout vin2 vbias a iceh icel a ileakh ileakl agnd pgnd en2 < circuit no.7 > rpulldown 1 ilat 1uf dcout lx en1 vin1 vrout vin2 vbias wave form measure point agnd pgnd en2 < circuit no.8 > 1uf dcout lx en1 vin1 vrout vin2 vbias a ilx agnd pgnd en2 < circuit no.9 > cin a dcout lx en1 vin1 vrout vin2 vbias agnd pgnd en2
26/49 XCM519 series test circuits ( continued ) dcout lx agnd pgnd en1 vin1 vrout en2 vin2 vbias v sw2 a cl2 4.7uf vss v v a a v a sw1 cbias 1.0uf cin2 1.0uf dcout lx agnd pgnd en1 vin1 vrout en2 vin2 vbias a cl2 4.7uf vss cbias 1.0uf sw1 v v sw2 v 1.0uf cin2 sw3 sw4 rl dcout lx agnd pgnd en1 vin1 vrout en2 vin2 vbias a cl2 4.7uf vss cbias 1.0uf 1.0uf cin2 rl v v v v waveform measure waveform measure * for the timing chart, please refer to on page 20.
27/49 x cm519 series typical performance characteristics ? 1ch:dc/dc block (1) efficiency vs. output current dcout=1.8v,1.2mhz ????? dcout=1.8v,3.0mhz l=4.7 h(nr4018), c in1 =10 f, c l1 =10 f ?????????? l=1.5 h(nr3015), c in1 =10 f, c l1 =10 f 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current:iout(ma) efficency:effi(% ) pwm/pfm automatic sw itching control pwm control vin= 4.2v 3.6v vin= 4.2v 3.6v 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current:iout(ma) efficency:effi(% ) pwm/pfm automatic sw itching control pwm control vin= 4.2v 3.6v vin= 4.2v 3.6v (2) output voltage vs. output current dcout=1.8v,1.2mhz ????? dcout=1.8v,3.0mhz l=4.7 h(nr4018), c in1 =10 f, c l1 =10 f ?????????? l=1.5 h(nr3015), c in1 =10 f, c l1 =10 f 1.5 1.6 1.7 1.8 1.9 2.0 2.1 0.1 1 10 100 1000 output current:iout(ma) output voltage:vout(v) pwm/pfm automatic sw itching control vin 4.2v,3.6v pwm co n t r o l 1.5 1.6 1.7 1.8 1.9 2.0 2.1 0.1 1 10 100 1000 output current:iout(ma) output voltage:vout(v) pwm/pfm automatic sw itching control vin 4.2v,3.6v pwm control (3) ripple voltage vs. output current dcout=1.8v,1.2mhz ????? dcout=1.8v,3.0mhz l=4.7 h(nr4018), c in1 =10 f, c l1 =10 f ?????????? l=1.5 h(nr3015), c in1 =10 f, c l1 =10 f 0 20 40 60 80 100 0.1 1 10 100 1000 output current:iout(ma) ripple voltage:vr(mv) pwm control vin 4.2v,3.6v pwm/pfm automatic sw itching control vin 4.2v 3.6v 0 20 40 60 80 100 0.1 1 10 100 1000 output current:iout(ma) ripple voltage:vr(mv) pwm/pfm automatic sw itching control vin 4.2v 3.6v pwm control vin 4.2v,3.6v
28/49 XCM519 series typical performance characteristics (continued) (4) oscillation frequency vs. ambient temperature dcout=1.8v,1.2mhz ????? dcout=1.8v,3.0mhz l=4.7 h(nr4018), c in1 =10 f, c l1 =10 f ?????????? l=1.5 h(nr3015), c in1 =10 f, c l1 =10 f 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) vin=3.6v oscillation frequency : fosc(mhz) 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) vin=3.6v oscillation frequency : fosc(mhz) (5) supply current vs. ambient temperature dcout=1.8v,1.2mhz ????? dcout=1.8v,3.0mhz 0 5 10 15 20 25 30 35 40 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) supply current : idd ( a ) vin=6.0v vin=4.0v 0 5 10 15 20 25 30 35 40 -50-250 255075100 ambient temperature: ta ( ) supply current : idd ( a ) vin=6.0v vin=4.0v (6) output voltage vs. ambient temperature ??????? (7) uvlo voltage vs. ambient temperature dcout=1.8v,3.0mhz ??? ? dcout=1.8v,3.0mhz 1.5 1.6 1.7 1.8 1.9 2.0 2.1 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) output voltage : vout (v) vin=3.6v 0.0 0.3 0.6 0.9 1.2 1.5 1.8 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) uvlo voltage : uvlo (v) ce=v in en=vin en=vin en=vin
29/49 x cm519 series typical performance characteristics (continued) (8) en "h" voltage vs. ambient temperature ?????? (9)en" l" voltage vs. ambient temperature dcout=1.8v,3.0mhz ????? dcout=1.8v,3.0mhz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) ce "h" voltage : vceh (v ) vin=5.0v vin=3.6v 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) ce "l" voltage : vcel (v) vin=5.0v vin=3.6v (10) soft start time vs. ambient temperature dcout=1.8v,3.0mhz ????? dcout=1.8v,3.0mhz l=4.7 h(nr4018), cin1=10 f, cl1=10 f ?? ???? l=1.5 h(nr3015), cin1=10 f, cl1=10 f 0 1 2 3 4 5 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) soft start time : tss (ms ) vin=3.6v 0 1 2 3 4 5 -50-250 255075100 ambient temperature: ta ( ) soft start time : tss (ms ) vin=3.6v (11) "pch / nch" driver on resistance vs. input voltage dcout=1.8v,3.0mhz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0123456 input voltage : vin (v) pch on resistance nch on resistance lx sw on resistance:rlxh,rlxl ( ? )
30/49 XCM519 series typical performance characteristics (continued) (12) XCM519xc/ XCM519xd rise wave form dcout=1.2v,1.2mhz ???? dcout=3.3v,3.0mhz (13) XCM519xc/ XCM519xd soft-start time vs. ambient temperature dcout=1.2v,1.2mhz ???? dcout=3.3v,3.0mhz l=4.7 h(nr4018), cin1=10 f, cl1=10 f ??????? l=1.5 h(nr3015), cin1=10 f, cl1=10 f (14) XCM519xc/ XCM519xd cl discharge resistance vs. ambient temperature dcout=3.3v,3.0mhz 100 200 300 400 500 600 -50 -25 0 25 50 75 100 ambient temperature: ta ( ) vin=6.0v vin=4.0v 0 100 200 300 400 500 -50 -25 0 25 50 75 100 ambient temperature: ta() soft start time :tss (s) 0 100 200 300 400 500 -50 -25 0 25 50 75 100 ambient temperature: ta() soft start time :tss (s) vin=5.0v iout=1.0ma vin=5.0v iout=1.0ma l=4.7 h (nr4018), cin1=10 f, c l 1 = 1 0 f l=1.5 h (nr3015), cin1=10 f, c l 1 = 1 0 f 100 s/div 100 s/div cl discharge resistance: (
) vin1=5.0v iout=1.0m a vin1=5.0v iout=1.0m a vout 0.5v/div vout 1.0v/div en 0.0v e 1.0v en 0.0v e 1.0v
31/49 x cm519 series typical performance characteristics (continued) (15) load transient response dcout=1.2v,1.2mhz(pwm/pfm automatic switching control) l=4.7 h(nr4018), c in1 =10 f(ceramic), c l1 =10 f(ceramic), topr=25 ? v in1 =3.6v, en1=v in1 i out =1ma 100ma i out =1ma 300ma 1ch : i out 1ch : i out 2ch 2ch v out : 50mv/div v out : 50mv/div 50 s/div 50 s/div i out =100ma 1ma i out =300ma 1ma 1ch : i out 1ch : i out 2ch 2ch v out : 50mv/div v out : 50mv/div 200 s/div 200 s/div
32/49 XCM519 series typical performance characteristics (continued) (15) load transient response (continued) dcout=1.2v,1.2mhz(pwm control) l=4.7 h(nr4018), c in1 =10 f(ceramic), c l1 =10 f(ceramic), topr=25 ? v in1 =3.6v, en1=v in1 i out =1ma 100ma i out =1ma 300ma 1ch: i out 1ch: i out 2ch 2ch v out : 50mv/div v out : 50mv/div 50 s/div 50 s/div i out =100ma 1ma i out =300ma 1ma 1ch: i out 1ch: i out 2ch 2ch v out : 50mv/div v out : 50mv/div 200 s/div 200 s/div
33/49 x cm519 series typical performance characteristics (continued) (15) load transient response (continued) dcout t =1.8v,3.0mhz(pwm/pfm automatic switching control) l=1.5 h(nr3015), c in1 =10 f(ceramic), c l1 =10 f(ceramic),topr=25 ? v in1 =3.6v, en=v in1 i out =1ma 100ma i out =1ma 300ma 1ch : i out 1ch : i out 2ch ???? 2ch v out : 50mv/div v out : 50mv/div 50 s/div 50 s/div iout=100ma 1ma iout=300ma 1ma 1ch : i out 1ch : i out 2ch ???? 2ch v out : 50mv/div v out : 50mv/div 200 s/div 200 s/div
34/49 XCM519 series typical performance characteristics (continued) (15) load transient response (continued) dcout=1.8v,3.0mhz(pwm control) l=1.5 h(nr3015), c in1 =10 f(ceramic), c l1 =10 f(ceramic), topr=25 ? v in1 =3.6v, en1=v in1 i out =1ma 100ma i out =1ma 300ma 1ch : i out 1ch : i out 2ch ???? 2ch v out : 50mv/div v out : 50mv/div 50 s/div 50 s/div i out =100ma 1ma i out =300ma 1ma 1ch : i out 1ch : i out 2ch 2ch v out : 50mv/div v out : 50mv/div 200 s/div 200 s/div
35/49 x cm519 series ? 2ch:regulator block typical performance characteristics (continued) (1) output voltage vs. output current vr out =0.7v 0.0 0.2 0.4 0.6 0.8 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.0v vr out =1.2v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.5v vr out =1.8v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =2.1v vr out =0.7v 0.0 0.2 0.4 0.6 0.8 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) vin2=1.0v vin2=1.2v vin2=1.5v c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.2v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) vin2=1.3v vin2=1.5v vin2=1.8v c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.8v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 100 200 300 400 500 600 700 output current: i out (ma) output voltage: vr out (v) vin2=1.9v vin2=2.1v vin2=2.3v c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25
36/49 XCM519 series typical performance characteristics (continued) 2 output voltage vs. bias voltage vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1.71.92.12.32.5 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v in2 =1.0v, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.7 1.9 2.1 2.3 2.5 bias voltage: v bias (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v in2 =1.5v, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 1.8 2 2.2 2.4 2.6 2.8 3 bias voltage: v bias (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v in2 =2.1v, ta=25 vr out =0.7v 0.5 0.6 0.7 0.8 0.9 2.5 3 3.5 4 4.5 5 5.5 6 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1. 0f(cerami c), c l2 =4.7f(ceramic ) v in2 =1.0v, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 2.5 3 3.5 4 4.5 5 5.5 6 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1. 0f(cerami c), c l2 =4.7f(ceramic ) v in2 =1.5v, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 3 3.5 4 4.5 5 5.5 6 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v in2 =2.1v, ta=25
37/49 x cm519 series typical performance characteristics (continued) (3) output voltage vs. input voltage vr out =0.7v 0.5 0.6 0.7 0.8 0.9 0.5 0.6 0.7 0.8 0.9 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1 1.1 1.2 1.3 1.4 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 1.6 1.7 1.8 1.9 2 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 2 2.2 2.4 2.6 2.8 3 bias voltage: v bi as (v) output voltage: vr out (v) iout=0ma iout=30ma iout=100ma c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, ta=25
38/49 XCM519 series typical performance characteristics (continued) 4 dropout voltage vs. output current *1): vgs is a gate ?source voltage of the driver transistor that is defined as the value of v bias - v out (t) . a value of the dropout voltage is determined by the value of the vgs. ???? vr out =1.2v (vgs (*1) =1.8v) 0 100 200 300 400 0 100 200 300 400 output current: i out (ma) dropout voltage: vdif(mv) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.0v vr out =1.2v (vgs (*1) =2.1v) 0 100 200 300 400 0 100 200 300 400 output current: i out (ma) dropout voltage: vdif(mv) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.3v vr out =1.2v (vgs (*1) =2.4v) 0 100 200 300 400 0 100 200 300 400 output current: i out (ma) dropout voltage: vdif(mv) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v vr out =1.2v (vgs (*1) =3.0v) 0 100 200 300 400 0 100 200 300 400 output current: i out (ma) dropout voltage: vdif(mv) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =4.2v vr out =1.2v (vgs (*1) =3.8v) 0 100 200 300 400 0 100 200 300 400 output current: i out (ma) dropout voltage: vdif(mv) ta=-40 ta=25 ta=85 c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =5.0v vr out =1.2v 0 50 100 150 200 250 300 0 100 200 300 400 output current: iout(ma) dropout voltage: vdif(mv) vbias=3.0v vbias=3.3v vbias=3.6v vbias=4.2v vbias=5.0v c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) ta=25
39/49 x cm519 series typical performance characteristics (continued) (5) supply bias current vs. bias voltage (6) supply input current vs. input voltage vr out =0.7v 0 10 20 30 40 0123456 bias voltage: v bi as (v) supply bias current: i bi as (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(cerami c), c l2 =4.7f(ceramic ) v in2 =1.0v vr out =1.2v 0 10 20 30 40 0123456 bias voltage: v bi as (v) supply bias current: i bi as (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(cerami c), c l2 =4.7f(ceramic ) v in2 =1.5v vr out =0.7v 0.0 0.5 1.0 1.5 2.0 00.511.522.53 input voltage: v in (v) supply input current: i in (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v vr out =1.2v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.511.522.53 input voltage: v in (v) supply input current: i in (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v vr out =1.8v 0 10 20 30 40 0123456 bias voltage: v bi as (v) supply bias current: i bias (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(cerami c), c l2 =4.7f(ceramic ) v in2 =2.1v vr out =1.8v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 00.511.522.53 input voltage: v in (v) supply input current: i in (a) ta=-40 ta=25 ta=85 c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v
40/49 XCM519 series typical performance characteristics (continued) (7) output voltage vs. ambient temperature (8) supply bias current vs. ambient temperature vr out =0.7v 0.67 0.68 0.69 0.70 0.71 0.72 0.73 -50 -25 0 25 50 75 100 ambient temperature: ta() output voltage: vr out (v) iout=1ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.0v vr out =1.2v 1.17 1.18 1.19 1.20 1.21 1.22 1.23 -50 -25 0 25 50 75 100 ambient temperature: ta() output voltage: vr out (v) iout=1ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.5v vr out =1.8v 1.77 1.78 1.79 1.80 1.81 1.82 1.83 -50 -25 0 25 50 75 100 ambient temperature: ta() output voltage: vr out (v) iout=1ma iout=30ma iout=100ma c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =2.1v vr out =0.7v 15 20 25 30 35 40 -50 -25 0 25 50 75 100 ambient temperature: ta() supply bias current: i bias (a) c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.0v vr out =1.2v 15 20 25 30 35 40 -50 -25 0 25 50 75 100 ambient temperature: ta() supply bias current: i bias (a) c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.5v vr out =1.8v 15 20 25 30 35 40 -50 -25 0 25 50 75 100 ambient temperature: ta() supply bias current: i bias (a) c in2 =c bias =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =2.1v
41/49 x cm519 series typical performance characteristics (continued) (9) supply input current vs. ambient temperature vr out =0.7v 0.0 0.5 1.0 1.5 2.0 -50 -25 0 25 50 75 100 ambient temperature: ta() supply input current: i in (a) c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.0v vr out =1.2v 0.0 0.5 1.0 1.5 2.0 -50 -25 0 25 50 75 100 ambient temperature: ta() supply input current: i in (a) c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.5v vr out =1.8v 0.0 0.5 1.0 1.5 2.0 -50 -25 0 25 50 75 100 ambient temperature: ta() supply input current: i in (a) c in2 =c bias =1. 0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =2.1v
42/49 XCM519 series typical performance characteristics (continued) (10) bias transient response vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1.0 1.1 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltag e output voltag e c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.0v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.5 1.6 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltag e output voltag e c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.5v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 2.1 2.2 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltag e output voltage c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =2.1v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1.0 1.1 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltag e output voltag e c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.0v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.5 1.6 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltage output voltage c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.5v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.5 1.6 1.7 1.8 1.9 2.0 2.1 time (40usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 bias voltage v bias (v) bias voltag e output voltag e c in 2 =1.0 f(ceramic), c bias =0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =2.1v, i out =200ma, tr=tf=5.0 sec, ta=25
43/49 x cm519 series typical performance characteristics (continued) (11) input transient response time (20 s / div) time (20 s / div) time (20 s / div) time (20 s / div) time (20 s / div) time (20 s / div) vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1.0 1.1 time (20usec/div) output voltage vr out (v) -3 -2 -1 0 1 2 3 input voltage v in 2 (v) c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 input voltag e output voltage vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.5 1.6 time (20usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 input voltage v in 2 (v) input voltage output voltag e c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 2.1 2.2 time (20usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 input voltage v in (v) input voltag e output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =0.7v 0.5 0.6 0.7 0.8 0.9 1.0 1.1 time ( 20usec/div) output voltage vr out (v) -3 -2 -1 0 1 2 3 input voltage v in 2 (v) input voltage output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 1.0 1.1 1.2 1.3 1.4 1.5 1.6 time ( 20usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 input voltage v in 2 (v) input voltage output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.6 1.7 1.8 1.9 2.0 2.1 2.2 time ( 20usec/div) output voltage vr out (v) -1 0 1 2 3 4 5 input voltage v in 2 (v) input voltag e output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25
44/49 XCM519 series typical performance characteristics ( continued ) (12) load transient response time (45 s / div) time (45 s / div) time (45 s / div) time (45 s / div) vr out =1.2v 0.4 0.6 0.8 1.0 1.2 1.4 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output cur r ent output voltag e 10ma 100ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =1.5v, tr=tf=5.0 sec, ta=25 vr out =0.7v -0.1 0.1 0.3 0.5 0.7 0.9 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output current output voltage 10ma 100ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =1.0v, tr=tf=5.0 sec, ta=25 vr out =0.7v -0.1 0.1 0.3 0.5 0.7 0.9 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output cur r ent output voltag e 10ma 200ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =1.0v, tr=tf=5.0 sec, ta=25 vr out =1.2v 0.4 0.6 0.8 1.0 1.2 1.4 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output cur r ent output voltag e 10ma 200ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =1.5v, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.0 1.2 1.4 1.6 1.8 2.0 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output cur r ent output voltag e 10ma 100ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =2.1v, tr=tf=5.0 sec, ta=25 vr out =1.8v 1.0 1.2 1.4 1.6 1.8 2.0 time ( 45usec/div) output voltage vr out (v) 0 100 200 300 400 500 output cur r ent i out (ma) output cur r ent output voltag e 10ma 200ma c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, v in 2 =2.1v, tr=tf=5.0 sec, ta=25
45/49 x cm519 series typical performance characteristics (continued) (13) ce rising response time time (100 s / div) time (100 s / div) time (100 s / div) time (100 s / div) time (100 s / div) time (100 s / div) vr out =0.7v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v en 2 (v) en2 input voltag e output voltage c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.0v, v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v en 2 (v) en2 input voltag e output voltag e c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.5v, v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v ce (v) en2 input voltag e output voltag e c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =2.1v, v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =0.7v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v en 2 (v) en2 input voltag e output voltage c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.0v, v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v en 2 (v) en2 input voltag e output voltag e c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =1.5v, v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 4 en2 input voltage v en 2 (v) en2 input voltag e output voltage c in 2 =c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v in 2 =2.1v, v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25
46/49 XCM519 series typical performance characteristics ( continued ) (14) v in rising response time vr out =0.7v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltag e output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltag e output voltag e c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltage output voltag e c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =30ma, tr=tf=5.0 sec, ta=25 vr out =0.7v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltage output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.2v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltage output voltag e c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25 vr out =1.8v 0.0 0.5 1.0 1.5 2.0 2.5 time ( 100usec/div) output voltage vr out (v) -2 -1 0 1 2 3 input voltage v in (v) input voltag e output voltage c in 2 =0.1 f(ceramic), c bias =1.0 f(ceramic), c l2 =4.7 f(ceramic) v bias =3.6v, i out =200ma, tr=tf=5.0 sec, ta=25
47/49 x cm519 series typical performance characteristics (continued) (15) bias voltage ripple rejection rate (16) input voltage ripple rejection rate vr out =0.7v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v in_psrr (db) c bias =1.0f(ceramic), c in2 =0f, c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.0v dc +0.2vp-p ac , iout=30ma, ta=25 vr out =1.2v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v in_psrr (db) c bias =1.0f(ceramic), c in2 =0f, c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =1.5v dc +0.2vp-p ac , iout=30ma, ta=25 vr out =1.8v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v in_psrr (db) c bias =1.0f(ceramic), c in2 =0f, c l2 =4.7f(ceramic ) v bias =3.6v, v in2 =2.1v dc +0.2vp-p ac , iout=30ma, ta=25 vr out =0.7v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v bi as_psrr (db) c bias =0f, c in2 =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v dc +0.2vp-p ac , v in2 =1.0v, i out =30ma, ta=25 vr out =1.2v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v bi as_psrr (db) c bias =0f, c in2 =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v dc +0.2vp-p ac , v in2 =1.5v, i out =30ma, ta=25 vr out =1.8v 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 1000 10000 frequency (khz) v bi as_psrr (db) c bias =0f, c in2 =1.0f(ceramic), c l2 =4.7f(ceramic ) v bias =3.6v dc +0.2vp-p ac , v in2 =2.1v, i out =30ma, ta=25
48/49 XCM519 series ? usp-12b01 ? usp-12b01 reference pattern layout ?????????????? ? usp-12b01 reference metal mask design packaging information 20/1 g mm 123456 7 8 9 11 12 10 ? ` ?I au m in0 .3um ?? ? au ? ? 1???? ??? 0.25 0 .05 0.2 0 .05 0.2 0 .05 0.20.05 0.20.05 0.2 0 .05 0.250.1 0.250.1 1.30.1 2.30.08 1234 5678 2.80.08 0.40.1 1.20.1 1.20.1 max 0 . 6 (0.4)(0.4)(0.4)(0.4) (0 .4 ) (0 .15 ) (0 .25 ) 0.70.05 0.70.05 0.25 0.25 0.65 0.65 0.90 1.35 0.90 1.35 0.45 0.45 1.30 1.60 0.10 0.10 1.30 1.60 0.30 0 .025 0.025 0.25 0 .025 0.025 0.55 0.95 0.25 0.15 0.65 1.05 0.20 0.20 0.50 0.60 1.10 1.55 0.60 1.10 1.55 0.55 0.95 1.30 0.55 0.95 1.30 0.25 0.25 0.35 0.35 0.20 0.05 0.05 0.15 0.05 0.05 0.55 0.95 0.25 0.15 0.65 1.05 0.15 0.15 0.40 * au plate thickness: minimum 0.3 m *the side of pins is not plated, nickel is exposed. *pin #1 is wider than other pins. unit: mm
49/49 x cm519 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the informat ion in this datasheet is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. the products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this datasheet within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this dat asheet may be copied or reproduced without the prior permission of torex semiconductor ltd.

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