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1/32 XC9503 series 2ch.step-down dc/dc controller ics general description XC9503 series are pwm controlled, pwm/pfm automatic switching controlled, multi-functional, 2 channel step-down dc/dc controller ics. since the series has a built-in 0.9v reference voltage (accuracy 2%), 0.9v to 6.0v can be set using external components. with a 300khz frequency, the size of the external component s can be reduced. switching frequencies of 180khz & 500khz are also available as custom-designed products. the control of the XC9503 series can be switched between pwm control and pwm/pfm automatic switching control using external signals. control switches from pwm to pfm during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. noise is easily reduced with pwm control since the frequenc y is fixed. the series gives freedom to select control suited to the application. soft-start time is internally set to 10msec and offers protection against in-rush currents when the power is switched on and also protects against voltage overshoot. applications pdas palmtop computers digital cameras various multi function power supplies typical application circuit features 2 ch dc/dc controller (step-down & down) input voltage range : 2.0v ~ 10v power supply voltage range : 2.0v ~ 10v output voltage range : 0.9v ~ 6.0v (set by fb pins) oscillation frequency : 300khz ( 15%) (180khz, 500khz custom) maximum duty cycle : 100% control method: : pwm or pwm/pfm selectable output current : more than 1000ma (v in =5.0v, v out =3.3v) high efficiency : 92% (tpy.) stand-by function : 3.0 a (max.) soft-start time : 10 ms (internally set) package : msop-10, usp-10 <XC9503b093a v out : 3.3v, v out : 1.8v > typical performance characteristics efficiency vs. output current go-compatible etr0703_001
2/32 XC9503 series pin number pin name functions 1 ext 1 channel 1: external transistor drive pin 2 v dd supply voltage 3 fb1 channel 1: output voltage monitor feedback pin 4 pwm1 channel 1: pwm/pfm switching pin 5 en1 channel 1: enable pin 6 en2 channel 2: enable pin 7 pwm2 channel 2: pwm/pfm switching pin 8 fb2 channel 2: output voltage monitor feedback pin 9 gnd ground 10 ext2 channel 2: external transistor drive pin designator description symbol description type of dc/dc controller b : standard type (10 pin) output voltage 09 : fb products =0, =9 fixed 2 : 180khz (custom) 3 : 300khz oscillation frequency 5 : 500khz (custom) a : msop-10 package d : usp-10 r : embossed tape, standard feed device orientation l : embossed tape, reverse feed pin configuration pin assignment msop-10 (top view) usp-10 (bottom view) product classification ordering information XC9503 ?????
3/32 x c9503 series parameter symbol ratings units v dd pin voltage v dd - 0.3 ~ 12 v fb1, 2 pin voltage v fb - 0.3 ~ 12 v en1, 2 pin voltage v en - 0.3 ~ 12 v pwm1, 2 pin voltage v pwm - 0.3 ~ 12 v ext1, 2 pin voltage v ext - 0.3 ~ v dd + 0.3 v ext1, 2 pin current i ext 100 ma msop-10 150 power dissipation usp-10 pd 150 mw operating temperature range topr - 40 ~ + 85 storage temperature range tstg - 55 ~ + 125 block diagram absolute maximum ratings ta = 2 5 note: voltage is all ground standardized.
4/32 XC9503 series parameter symbol conditions min. typ. max. units circuit supply voltage v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v v out1 0.9 - 10.0 v output voltage range (* 1) v outset v in R 2.0v, i out1, 2 =1ma v out2 0.9 - 10.0 v supply current 1 i dd1 fb1, 2=0v - 60 120 a en1=3.0v, en2=0v, fb1=0v supply current 1-1 i dd1-1 en2=3.0v, en1=0v, fb2=0v - 50 110 a fb1=0v, fb2=1.0v supply current 1-2 i dd1-2 fb1=1.0v, fb2=0v - 60 130 a supply current 2 i dd2 fb1, 2=1.0v - 60 140 a stand-by current istb same as i dd1 , en1=en2=0v - 1.0 3.0 a switching frequency fosc same as i dd1 153 180 207 khz en1, 2 "high" voltage v enh fb1, 2=0v 0.65 - - v en1, 2 "low" voltage v enl fb1, 2=0v - - 0.20 v en1, 2 "high" current i enh en1, 2=3.0v - - 0.50 a en1, 2 "low" current i enl en1, 2=0v, fb1, 2=3.0v - - -0.50 a pwm1, 2 "high" current i pwmh fb1, 2=3.0v, pwm=3.0v - - 0.50 a pwm1, 2 "low" current i pwml fb1, 2=3.0v, pwm=0v - - -0.50 a fb1, 2 "high" current i fbh fb1, 2=3.0v - - 0.50 a fb1, 2 "low" current v fbl fb1, 2=1.0v - - -0.50 a parameter symbol conditions min. typ. max. units circuit fb1 voltage v fb1 v in =3.0v, i out1 =10ma 0.882 0.900 0.918 v minimum operation voltage v inmin1 - - 2.0 v maximum duty ratio 1 maxdty1 same as i dd1 100 - - % minimum duty ratio1 mindty1 same as i dd2 - - 0 % pfm duty ratio 1 pfmdty1 no load, vpwm1=0v 22 30 38 % efficiency1 (* 4) effi1 i out1 =250ma p-ch mosfet: xp162a12a6p - 92 - % soft-start time1 t ss1 v out1 0.95v, en1=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh1 en1=0, ext1=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl1 fb2=0v, ext1=0.4v - 22 30 pwm1 "high" voltage v pwmh1 no load 0.65 - - v pwm1 "low" voltage v pwml1 no load - - 0.20 v parameter symbol conditions min. typ. max. units circuit fb2 voltage v fb2 v in =3.0v, i out2 =10ma 0.882 0.900 0.918 v minimum operating voltage v inmin2 - - 2.0 v maximum duty ratio 2 maxdty2 same as i dd1 100 - - % minimum duty ratio 2 mindty2 same as i dd2 - - 0 % pfm duty ratio 2 pfmdty2 no load, v pw m2 =0v 22 30 38 % efficiency 1 (* 2) effi2 i out2 =250ma p-ch mosfet: xp162a12a6p - 92 - % soft-start time 1 t ss2 v out2 0.95v, en2=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh2 en2=0, ext2=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl2 fb2=0v, ext2=0.4v - 22 30 pwm 2 "high" voltage v pwmh2 no load 0.65 - - v pwm 2 "low" voltage v pwml2 no load - - 0.20 v step-down controller *1: please be careful not to exceed the breakdown voltage level of the peripheral parts. *2: effi={ [ (output voltage) (output current) ] / [ (input voltage) (input current) ] } 100
5/32 x c9503 series parameter symbol conditions min. typ. max. units circuit supply voltage v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v v out1 0.9 - 10.0 v output voltage range (* 1) v outset v in R 2.0v, i out1, 2 =1ma v out2 0.9 - 10.0 v supply current 1 i dd1 fb1, 2=0v - 70 140 a en1=3.0v, en2=0v, fb1=0v supply current 1-1 i dd1-1 en2=3.0v, en1=0v, fb2=0v - 60 120 a fb1=0v, fb2=1.0v supply current 1-2 i dd1-2 fb1=1.0v, fb2=0v - 70 150 a supply current 2 i dd2 fb1, 2=1.0v - 80 150 a stand-by current i stb same as i dd1 , en1=en2=0v - 1.0 3.0 a switching frequency fosc same as i dd1 255 300 345 khz en1, 2 "high" voltage v enh fb1, 2=0v 0.65 - - v en1, 2 "low" voltage v enl fb1, 2=0v - - 0.20 v en1, 2 "high" current i enh en1, 2=3.0v - - 0.50 a en1, 2 "low" current i enl en1, 2=0v, fb1, 2=3.0v - - -0.50 a pwm1, 2 "high" current i pwmh fb1, 2=3.0v, pwm=3.0v - - 0.50 a pwm1, 2 "low" current i pwml fb1, 2=3.0v, pwm=0v - - -0.50 a fb1, 2 "high" current i fbh fb1, 2=3.0v - - 0.50 a fb1, 2 "low" current v fbl fb1, 2=1.0v - - -0.50 a parameter symbol conditions min. typ. max. units circuit fb 1 voltage v fb1 v in =3.0v i out1 =10ma 0.882 0.900 0.918 v minimum operating voltage v inmin1 - - 2.0 v maximum duty ratio 1 maxdty1 same as i dd1 100 - - % minimum duty ratio 1 mindty1 same as i dd2 - - 0 % pfm duty ratio 1 pfmdty1 no load, v pw m1 =0v 22 30 38 % efficiency1 (* 4) effi1 i out1 =250ma p-ch mosfet: xp162a12a6p - 92 - % soft-start time 1 t ss1 v out1 0.95v, en1=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh1 en1=0, ext1=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl1 fb2=0v, ext1=0.4v - 22 30 pwm1 "high" voltage v pwmh1 no load 0.65 - - v pwm1 "low" voltage v pwml1 no load - - 0.20 v parameter symbol conditions min. typ. max. units circuit fb 2 voltage v fb2 v in =3.0v, i out2 =10ma 0.882 0.900 0.918 v minimum operating voltage v inmin2 - - 2.0 v maximum duty ratio 2 maxdty2 same as i dd1 100 - - % minimum duty ratio 2 mindty2 same as i dd2 - - 0 % pfm duty ratio 2 pfmdty2 no load, vpwm2=0v 22 30 38 % efficiency 1 (* 2) effi2 i out2 =250ma p-ch mosfet: xp162a12a6p - 92 - % soft-start time 1 t ss2 v out2 0.95v, en2=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh2 en2=0, ext2=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl2 fb2=0v, ext2=0.4v - 22 30 pwm2 "high" voltage v pwmh2 no load 0.65 - - v pwm2 "low" voltage v pwml2 no load - - 0.20 v electrical characteristics (continued) common characteristics output 1 characteristics unless otherwise stated, v dd =3.0v, pwm1, 2=3.0v, en1, 2 =3.0v output 2 characteristics *1: please be careful not to exceed the breakdown voltage level of the peripheral parts. *2: effi={ [ (output voltage) (output current) ] / [ (input voltage) (input current) ] } 100 XC9503b093a unless otherwise stated, v dd =en1=pwm1=3.0v, pwm2=en2=gnd, ext2=open, fb2=open, v in =5.0v ta = 2 5 step-down controller step-down controller unless otherwise stated, v dd =en2=pwm2=3.0v, pwm1=en1=gnd, ext1=open, fb1=open, v in =5.0v note:
6/32 XC9503 series parameter symbol conditions min. typ. max. units circuit supply voltage v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v v out1 0.9 - 10.0 v output voltage range (* 1) v outset v in R 2.0v, i out1, 2 =1ma v out2 0.9 - 10.0 v supply current 1 i dd1 fb1, 2=0v - 90 170 a en1=3.0v, en2=0v, fb1=0v supply current 1-1 i dd1-1 en2=3.0v, en1=0v, fb2=0v - 80 150 a fb1=0v, fb2=1.0v supply current 1-2 i dd1-2 fb1=1.0v, fb2=0v - 100 180 a supply current 2 i dd2 fb1, 2=1.0v - 100 190 a stand-by current i stb same as i dd1 , en1=en2=0v - 1.0 3.0 a switching frequency fosc same as i dd1 425 500 575 khz en1, 2 "high" voltage v enh fb1, 2=0v 0.65 - - v en1, 2 "low" voltage v enl fb1, 2=0v - - 0.20 v en1, 2 "high" current i enh en1, 2=3.0v - - 0.50 a en1, 2 "low" current i enl en1, 2=0v, fb1, 2=3.0v - - -0.50 a pwm1, 2 "high" current i pwmh fb1, 2=3.0v, pwm=3.0v - - 0.50 a pwm1, 2 "low" current i pwml fb1, 2=3.0v, pwm=0v - - -0.50 a fb1, 2 "high" current i fbh fb1, 2=3.0v - - 0.50 a fb1, 2 "low" current v fbl fb1, 2=1.0v - - -0.50 a parameter symbol conditions min. typ. max. units circuit fb 1 voltage v fb1 v in =3.0v, i out1 =10ma 0.882 0.900 0.918 v minimum operation voltage v inmin1 - - 2.0 v maximum duty ratio 1 maxdty1 same as i dd1 100 - - % minimum duty ratio 1 mindty1 same as i dd2 - - 0 % pfm duty ratio 1 pfmdty1 no load, v pw m1 =0v 22 30 38 % efficiency1 (* 4) effi1 i out1 =250ma p-ch mosfet: xp162a12a6p - 91 - % soft-start time 1 t ss1 v out1 0.95v, en1=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh1 en1=0, ext1=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl1 fb2=0v, ext1=0.4v - 22 30 pwm1 "high" voltage v pwmh1 no load 0.65 - - v pwm1 "low" voltage v pwml1 no load - - 0.20 v parameter symbol conditions min. typ. max. units circuit fb 2 voltage v fb2 v in =3.0v, i out2 =10ma 0.882 0.900 0.918 v minimum operation voltage v inmin2 - - 2.0 v maximum duty ratio 2 maxdty2 same as i dd1 100 - - % minimum duty ratio 2 mindty2 same as i dd2 - - 0 % pfm duty ratio 2 pfmdty2 no load, v pw m2 =0v 22 30 38 % efficiency 1 (* 2) effi2 i out2 =250ma p-ch mosfet: xp162a12a6p - 91 - % soft-start time 1 t ss2 v out2 0.95v, en2=0v 0.65v 5.0 10.0 20.0 ms ext1 "high" on resistance r extbh2 en2=0, ext2=v dd -0.4v - 28 47 ext1 "low" on resistance r extbl2 fb2=0v, ext2=0.4v - 22 30 pwm2 "high" voltage v pwmh2 no load 0.65 - - v pwm2 "low" voltage v pwml2 no load - - 0.20 v electrical characteristics (continued) common characteristics output 1 characteristics unless otherwise stated , v dd =3.0v , pwm1 , 2=3.0v , en1 , 2 =3.0v output 2 characteristics unless otherwise stated, v dd =en2=pwm2=3.0v, pwm1=en1=gnd, ext1=open, fb1=open, v in =5.0v note: *1 : please be careful not to exceed the breakdown voltage level of the peripheral parts. *2 : effi={ [ (output voltage) (output current) ] / [ input voltage] (input current) ] } 100 XC9503b095a unless otherwise stated, v dd =en1=pwm1=3.0v, pwm2=en2=gnd, ext2=open, fb2=open, v in =5.0v ta = 2 5 step-down controller step-down controller
7/32 x c9503 series operational explanation the XC9503 series are multi-functional, 2 channel step-down dc/dc converter controller ics with built-in high speed, low on resistance drivers. the error amplifier is designed to monitor the output voltage and it compares the feedback voltage (fb) with the reference voltage. in response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases. this circuit generates the switching frequency, which in turn generates the reference clock. the ramp wave generator generates a saw-tooth waveform based on outputs from the phase shift generator. the pwm comparator compares outputs from the error amp. and saw-tooth waveform. when the voltage from the error amp's output is low, the external switch will be set to on. this circuit generates pfm pulses. control can be switched between pwm control and pwm/pfm automatic switching control using external signals. the pwm/pfm automatic switching mode is selected when the voltage of the pwm1 (2) pin is less than 0.2v, and the control switches between pwm and pfm automatically depending on the load. as the pfm circuit generates pulses based on outputs from the pwm comparator, shifting between modes occurs smoothly. pwm control mode is selected when the voltage of the pwm1 (2) pin is more than 0.65v. noise is easily reduced with pwm control since the switching frequency is fixed. control suited to the application can easily be selected which is useful in audio applications, for example, where traditionall y, efficiencies have been sacrificed during stand-by as a result of using pwm control (due to the noise problems associated with the pfm mode in stand-by). the reference voltage, vref (fb pin voltage)=0.9v, is adjusted and fixed by laser trimming (for output voltage settings, please refer to next page). to protect against inrush current, when the power is switched on, and also to protect against voltage overshoot, soft-start time is set internally to 10ms. it should be noted, however, that this circuit does not protect the load capacitor (c l ) from inrush current. with the vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the ext pin's on time so that it doesn't increase more than is necessary. this function controls the operation and shutdown of the ic. when the voltage of the en1 or en2 pins is 0.2v or less, the mode will be chip disable, the channel's operations will stop and the ext pins will be kept at a high level (the external p-ch mosfet will be off). when both en1 and en2 are in a state of chip disable, current consumption will be no more than 3.0 a. when the en1 or en2 pin's voltage is 0.65v or more, the mode will be chip enable and operations will recommence. with soft-start, 95% of the set output voltage will be reached within 10ms (typ.) from the moment of chip enable.
8/32 XC9503 series v out (v) r fb11 (k ) r fb12 (k ) c fb1 (pf) v out (v) r fb11 (k ) r fb12 (k ) c fb1 (pf) 1.0 30 270 430 2.5 390 220 33 1.5 220 330 62 2.7 360 180 33 1.8 220 220 62 3.0 560 240 24 2.0 330 270 39 3.3 200 75 62 2.2 390 270 33 5.0 82 18 160 output voltage can be set by adding external split resistors. output voltage is determined by the following equation, based on the values of r fb11 (r fb21 ) and r fb12 (r fb22 ). the sum of r fb11 (r fb21 ) and r fb12 (r fb22 ) should normally be 1m or less. v out =0.9 (r fb11 +r fb12 ) /r fb12 the value of c fb1 (c fb2 ), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 c fb1 r fb11 ) which is equal to 12khz. adjustments are required from 1khz to 50khz depending on the application, value of inductance (l), and value of load capacity (c l ). [example of calculation] when r fb11 =200k and r fb12 =75k , v out1 =0.9 (200k+75k) / 75k=3.3v. [typical example] [external components] tr : * mosfet xp162a12a6p (p-ch power mosfet, torex) note: v gs breakdown voltage of this tr. is 12v so please be careful with the power supply voltage. sd : l : c l1 : * pnp mosfet 2sa1213 (sanyo) 500 ( adjust in accordance with load & tr.'s hfe.) set according to the equation below. r b Q (v in -0.7) hfe / ic-r extbh 2200pf (ceramic) set according to the equation below. c b1 Q (2 r b fosc 0.7) the same method can be adopted for channel two also. ma2q737 (schottky, matsushita) cms02 (schottky, toshiba) 10 h (cdrh5d28, sumida, fosc = 500khz) 22 h (cdrh5d28, sumida, fosc = 300khz) 22 h (cdrh5d28, sumida, fosc = 180khz) 16v, 47 f (tantalum) increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. c=(c l standard value) (i out (ma) / 500ma v out / v in tr : r b : c b : the same components can be adopted for both channel 1 and channel 2. operational explanation ( continued )
9/32 x c9503 series test circuits r fb11 r fb12 c l1 v out 1 510 2200pf l2 pnp tr2 r fb21 r fb22 r l2 c l2 v out 2 r l1 v i n 1 f 2 vd d 3 fb 1 fb 2 8 gnd 9 4 pwm1 pwm2 7 5 en 1 e n2 6 circuit 1 circuit 2 sbd2 c i n circuit 5 circuit 6 circuit 7 pc h mosfet2 l2 r l v v in v out 2 a a c in 2 vd d 3 fb 1 fb 2 8 gnd 9 4 pwm1 pwm2 7 5 en1 e n 2 6 c l2 os c v pwm1 v en1 a 1 f v dd osc a a v pwm2 a a v en2 2 vdd 3 fb1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en1 en2 6 v fb1 a v fb2 a v pw m 1 v en1 1 f v dd v pwm2 v en2 2 vdd 3 fb1 fb2 8 gn d 9 4 pwm1 pwm2 7 5 en 1en2 6 v fb 1 v fb2 v ext2 sbd2 c in c fb1 c fb2 a pch mosfet2 l2 r l v v in v ou t 2 a a 2 vdd 3 fb 1 fb2 8 gnd 9 4 pwm1 pwm2 7 5 en 1 e n2 6 sb d 2 20 0 k 75 k c l2 62pf 22 00pf 510 sbd 1 l1 pn p tr 1 a v ext1 r l v in c l1 v ou t 1 c in a 2 vdd 3 fb1 fb 2 8 gn d 9 4 pw m 1 pw m 2 7 5 en1 e n2 6 v a pch mosfet1 circuit 3 circuit 4 r l v in c l1 v out 1 c in a 2 vdd 3 fb 1 fb2 8 gn d 9 4 pwm1 pwm2 7 5 en1 en2 6 v a pch mosfet1 62pf sbd1 sbd1 200k 75 k l1 l1 1 ex t1 ex t2 10 e x t2 10 1 ext1 ext2 10 1 ex t1 ext2 10 1 e xt1 ext2 10 1 e xt1 1 ext1 ext2 10 1 ext1 ext2 10 circuit circuit circuit circuit circuit circuit circuit
10/32 XC9503 series circuit l1, l2: 22 h (cdrh5d28, sumida) : XC9503b092a 15 h (cdrh5d28, sumida) : XC9503b093a 10 h (cdrh5d28, sumida) : XC9503b095a sd1, sd2: crs02 (schottky diode, toshiba) ec10qs06 (schottky diode, nihon inter) c l1 , c l2 : 16mce476md2 (tantalum, nihon chemicon) c in : 16mce476md2 (tantalum, nihon chemicon) pnp tr1: 2sa1213 (toshiba) r fb : please use by the conditions as below: r fb11 + r fb12 < 1m r fb21 + r fb22 < 1m r fb11 / r fb12 = (setting output voltage / 0.9) - 1 v out2 = (0.9 ? v out1 ) x (r fb21 /r fb22 ) + 0.9v c fb : please adjust as below: fxfb=1/(2 x x c fb1 x r fb11 ) = 1khz ~ 50khz (12khz usual) fxfb=1/(2 x x c fb2 x r fb21 ) = 1khz ~ 50khz (12khz usual) circuit l1: 22 h (cdrh5d28, sumida) sd1: ma2q737 (schottky diode, matsushita) c l1 : 16mce476md2 (tantalum, nihon chemicon) c in : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet1: xp162a12a6p (torex) circuit l1: 22 h (cdrh5d28, sumida) : XC9503b092a 15 h (cdrh5d28, sumida) : XC9503b093a 10 h (cdrh5d28, sumida) : XC9503b095a sd1: ma2q737 (schottky diode, matsushita) c l1 : 16mce476md2 (tantalum, nihon chemicon) c in : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet1: xp162a12a6p (torex) circuit l1: 22 h (cdrh5d28, sumida) sd1: ma2q737 (schottky diode, matsushita) c l1 : 16mce476md2 (tantalum, nihon chemicon) c in : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet2: xp162a12a6p (torex) circuit l2: 22 h (cdrh5d28, sumida) : XC9503b092a 15 h (cdrh5d28, sumida) : XC9503b093a 10 h (cdrh5d28, sumida) : XC9503b095a sd2: ma2q737 (schottky diode, matsushita) c l2 : 16mce476md2 (tantalum, nihon chemicon) c in : 16mce476md2 (tantalum, nihon chemicon) p-ch mosfet2: xp162a12a6p (torex) external components used for test circuits
11/32 x c9503 series 1. checking for intermittent oscillation the XC9503 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g., from 4.2 v to 3.3 v) or a heavy load is applied where the duty ratio becomes high. check waveforms at ext under your operating conditions. a remedy for this problem is to raise the inductance of coil l or increase the load capacitance c l . 3. ratings use the XC9503 series and external components within the limits of their ratings.
12/32 XC9503 series typical performance characteristics (1) output voltage vs. output current * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm contr ol vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p focs=300khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control vin=2.7v 3.3v l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v, 6.0v 8.0v 10.0v 5.0v fosc=300khz, v out1, 2 =1.8v 1.5 1.6 1.7 1.8 1.9 2.0 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =1.8v 1.5 1.6 1.7 1.8 1.9 2.0 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10.0v fosc=300khz, v out1, 2 =2.5v 2.2 2.3 2.4 2.5 2.6 2.7 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =2.5v 2.2 2.3 2.4 2.5 2.6 2.7 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm /pfm switching contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v 3.3v 4.2v 5.0v 6.0v 8.0v vin=2.7v
13/32 x c9503 series (1) output voltage vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin= 6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm contr ol l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v 4.2v 5.0v 6.0v 8.0v vin=2.7v 3.0v typical performance characteristics (continued)
14/32 XC9503 series (1) output voltage vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=180khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm control l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm contr ol l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0.7 0.8 0.9 1.0 1.1 1.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10.0v fosc=500khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm contr ol l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =3.3v 3.0 3.1 3.2 3.3 3.4 3.5 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm /pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10.0v fosc=180khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm contr ol l=47 h(cdrh6d38), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 6.0v 8.0v 10v typical performance characteristics (continued)
15/32 x c9503 series (1) output voltage vs. output current (continued) fosc=500khz, v out1, 2 =5.0v 4.7 4.8 4.9 5.0 5.1 5.2 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) output voltage1, 2 v out1, 2 (v) pwm/pfm switching control pwm contr ol l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin= 6.0v 8.0v 10v typical performance characteristics (continued)
16/32 XC9503 series (2) efficiency vs. output current * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 4.2v 3.3v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=5.0v 10.0v 6.0v pwm/pfm switching control pwm contr ol fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 3.3v vin= 2.7v 4.2v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=5.0v 8.0v 10.0v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v vin=2.7v 3.3v pwm/pfm switching contr ol pwm control fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=5.0v 10v 6.0v pwm/pfm switching control pwm control typical performance characteristics (continued)
17/32 x c9503 series (2) efficiency vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v 6.0v 8.0v 10.0v pwm/pfm switching control pwm control fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v pwm/pfm switching control pwm control 10.0v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 4.2v 3.3v pwm/pfm switching control pwm contr ol fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=5.0v 10v 8.0v pwm/pfm switching control pwm contr ol fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v pwm/pfm switching control pwm contr ol typical performance characteristics (continued) fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v vin=4.2v 10v 8.0v 5.0v pwm/pfm switching contr ol pwm control
18/32 XC9503 series (2) efficiency vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 3.3v vin=2.7v pwm/pfm switching control pwm control 4.2v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=5.0v pwm/pfm switching control pwm control 8.0v 6.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v pwm/pfm switching control pwm control 6.0v 8.0v 10.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) efficiency1, 2 e ffi1, 2 (%) l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v pwm/pfm switching control pwm control 10.0v typical performance characteristics ( continued )
19/32 x c9503 series (3) ripple voltage vs. output current * when setting vout1, 2 =1.0v, vin=8.0v, 10.0v, cl should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v 8.0v 10v vin=2.7v 3.3v 5.0v 6.0v fosc=300khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=2.7v 3.3v 8.0v 4.2v 10v 6.0v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =1.8v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =2.5v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=2.7v 3.3v 4.2v 6.0v 8.0v 10v typical performance characteristics (continued)
20/32 XC9503 series (3) ripple voltage vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=4.2v 5.0v 6.0v 8.0v 10v fosc=300khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching contr ol l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=4.2v 8.0v 6.0v 5.0v fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=300khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=22 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10.0v vin=6.0v 8.0v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=180khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) vin=2.7v pwm/pfm switching control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 6.0v 10v 8.0v 5.0v 4.2v 3.3v typical performance characteristics (continued)
21/32 x c9503 series (3) ripple voltage vs. output current (continued) * when setting v out1, 2 =1.0v, v in =8.0v, 10.0v, c l should be 94 f (tantalum) + 100 f (os-com) fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm contr ol l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=4.2v 6.0v 10v 5.0v fosc=180khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 5.0v vin=4.2v 10v 8.0v 6.0v fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm contr ol l=47 h(cdrh6d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=180khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm /pfm switching contr ol l=47 h(cdrh6d28), cl=94 f(tantaium) sd:cms02, tr:xp162a12a6p 10v vin=6.0v 8.0v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p vin=2.7v 3.3v 4.2v 5.0v 6.0v 8.0v 10v fosc=500khz, v out1, 2 =1.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching contr ol l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 4.2v 6.0v 5.0v 10v 8.0v vin=2.7v 3.3v typical performance characteristics (continued)
22/32 XC9503 series (3) ripple voltage vs. output current (continued) fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=4.2v 5.0v 6.0v 8.0v fosc=500khz, v out1, 2 =3.3v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 10v vin=4.2v 8.0v 6.0v 5.0v fosc=500khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v fosc=500khz, v out1, 2 =5.0v 0 20 40 60 80 100 0.1 1 10 100 1000 output current1, 2 i out1, 2 (ma) ripple voltage1, 2 (mv) pwm/pfm switching control l=10 h(cdrh5d28), cl=94 f(tantalum) sd:cms02, tr:xp162a12a6p 8.0v vin=6.0v 10v typical performance characteristics (continued)
23/32 x c9503 series (4) supply current 1 vs. supply voltage (5) supply current 1_1 vs. supply voltage (6) supply current 1_2 vs. supply voltage (7) supply current 2 vs. supply voltage (8) stand-by current vs. supply voltage (9) oscillation frequency vs. supply voltage typical performance characteristics ( continued ) XC9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 1 idd1 ( a ) topr=85 25 - 40 XC9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) suppy current 1-1 idd1-1 ( a ) topr=85 25 - 40 topr=85 o c 25 o c - 40 o c XC9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 1-2 idd1-2 ( a ) topr=85 25 - 40 XC9503b092 (180khz) 0 50 100 150 200 250 0246810 supply voltage vdd (v) supply current 2 idd2 ( a ) topr=85 25 - 40 XC9503b092 (180khz) 0 2 4 6 8 10 0246810 suppy voltage vdd (v) stand-by curret istb ( a ) topr=85 25 - 40 XC9503b093(180khz) 240 270 300 330 360 0246810 supply voltage vdd (v) oscillaltion frequency fosc khz
24/32 XC9503 series (10) en1, 2 'high' 'low' voltage vs. supply voltage (14) ext1, 2 'high' on resistance vs. supply voltage (12) pfm duty ratio 1, 2 vs. supply voltage (15) ext1, 2 'low' on resistance vs. supply voltage (13) output voltage vs. ambient temperature (11) pwm1, 2 'high' 'low' voltage vs. supply voltage typical performance characteristics ( continued ) XC9503b093 (300khz) 0 0.2 0.4 0.6 0.8 0246810 supply voltage vdd (v) en1, 2 'h' 'l' voltage ven 1, 2 (v) 85 - 40 topr=25 XC9503b093 (300khz) 0 0.2 0.4 0.6 0.8 0246810 supply voltage vdd (v) pwm1, 2 'h' 'l' voltage v pw m1 , 2 (v) - 40 85 topr=25 XC9503b093(300khz) 20 25 30 35 40 0246810 supply voltage vdd (v) pfm duty ratio 1, 2 (% ) topr=85 25 - 40 XC9503b092 (180khz) 0 10 20 30 40 50 0246810 supply voltage vdd (v) ext1, 2 'high' on resistance () topr=85 25 - 40 XC9503b092 (180khz) 0 10 20 30 40 50 0246810 supply voltage vdd (v) ext1, 2 'low' on resistance () topr=85 25 - 40 XC9503b093(300khz) 3.0 3.1 3.2 3.3 3.4 3.5 -50 -20 10 40 70 100 ambient temperature ta ( ) output voltage vout (v ) l=22uh(cdrh5d28), cl=94uf(tantalum) tr:xp162a12a6, sd:cms0 2 vin=5.0v iout=200ma XC9503b093(300khz)
25/32 x c9503 series (16) soft-start time 1, 2 vs. supply voltage typical performance characteristics (continued)
26/32 XC9503 series (17) load transient response < v out1, 2 = 3.3 v, v in = 5.0v, i out1, 2 = 100 a ? 300ma > pwm control ch1 ch2 3.3v 300ma 100 a 200 sec/div ch1: v out1, 2 , ac-coupled, 100mv/div ch2: i out1, 2 , 150ma/div pwm/pfm switching control fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =100 a 300ma ch1 ch2 300ma 100 a 3.3v ch1: v out1, 2 , ac-coupled, 100mv/div ch2: i out1, 2 , 1 50ma/div 200 sec/div fosc = 300khz, v out1, 2 = 3.3v v in = 5.0v, i out1, 2 = 100 a 300ma fosc = 300khz, v out1, 2 = 3.3v v in = 5.0v, i out1, 2 = 300ma 100 a ch1 ch2 3.3v 300ma 100 a 10msec/div ch1: v out1, 2 , ac-coupled, 50mv/div ch2: i out1, 2 , 150ma/div fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =300ma 100 a ch1 ch2 3.3v 300ma 100 a 10msec/div ch1: v out1, 2 , ac-coupled, 100mv/div ch2: i out1, 2 , 150ma/div typical performance characteristics (continued)
27/32 x c9503 series < v out1, 2 = 3.3v, v in = 5.0v, i out1, 2 =10ma ? 300ma > pwm control ch1 ch2 3.3v 300ma 10ma 200 sec/div ch1: v out1, 2 , ac-coupled, 50mv/div ch2: i out1, 2 , 150ma/div pwm/pfm switching control fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =10ma 300ma ch1 ch2 300ma 10ma 3.3v 200 sec/div fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =10ma 300ma fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =300ma 10ma ch1 ch2 3.3v 300ma fosc=180khz, v out1 =3.3v v in =5.0v, i out1, 2 =300ma 10ma ch1 ch2 3.3v 100ma 10ma 10ma 400 sec/div ch1: v out1, 2 , ac-coupled, 50mv/div ch2: i out1, 2 , 150ma/div ch1: v out1, 2 , ac-coupled, 100mv/div ch2: i out1, 2 , 150ma/div 200 sec/div ch1: v out1, 2 , ac-coupled, 50mv/div ch2: i out1, 2 , 150ma/div (17) load transient response (continued) typical performance characteristics (continued)
28/32 XC9503 series < v out1, 2 = 0.9v, v in = 3.3v, i out1, 2 =100 a ? 300ma > pwm control ch1 ch2 0.9v 300ma 100 a 200 sec/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div pwm/pfm switching control fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =100 a 300ma ch1 ch2 300ma 0.9v 200 sec/div fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =100 a 300ma ch1 ch2 0.9v 300ma fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =300ma 100 a ch1 ch2 0.9v 300ma 4msec/div ch1: v out1, 2 , ac-coupled, 50mv/div ch2: i out1, 2 , 150ma/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div 200 sec/div fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =300ma 100 a ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div 100 a 100 a 100 a (17) load transient response (continued) typical performance characteristics (continued)
29/32 x c9503 series < v out1, 2 = 0.9v, v in = 3.3v, i out1, 2 =10ma ? 300ma > pwm control ch1 ch2 0.9v 300ma 100 sec/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2, 150ma/div pwm/pfm switching control fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =10ma 300ma ch1 ch2 300ma 0.9v 200 sec/div fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =10ma 300ma fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =300ma 10ma ch1 ch2 0.9v 300ma fosc=300khz, v out1, 2 =0.9v v in =3.3v, i out1, 2 =300ma 10ma ch1 ch2 0.9v 300ma 10ma 100 sec/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div 200 sec/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 150ma/div 10ma 10ma 10ma (17) load transient response (continued) typical performance characteristics (continued)
30/32 XC9503 series < pwm control ? pwm / pfm switching control > ch1 ch2 3.3v 0.65v 0v ch1: v out1, 2 , ac-coupled, 10mv/div ch2: i out1, 2 , 0.5v/div < soft-start wave form > fosc=300khz, v out1, 2 =3.3v v in = 5.0v, i out 1, 2 = 300ma, en1, 2 'low' 'high', c in =47 f ch1 ch2 3.3v 200 sec/div fosc=300khz, v out1 , 2 =3.3v v in =5.0v, i out1, 2 =5ma, pwm1, 2 'low' 'high' fosc=300khz, v out1, 2 =3.3v v in =5.0v, i out1, 2 =5ma, pwm1, 2 'high' 'low' ch1 ch2 3.3v ch1 ch3 3.3v ch1: v out1, 2 , 2.0v/div ch2: i in1, 2 , 100ma/div ch3: en1, 2, 0.5v/div 4msec/div ch1: v out1, 2 , ac-coupled, 20mv/div ch2: i out1, 2 , 0.5v/div 400 sec/div fosc=300khz, v out1, 2 =3.3v v in = 5.0v, i out1, 2 = 100ma, en1, 2 'low' 'high', c in =47 f 4msec/div ch1: v out1, 2 , 2.0v/div ch2: i in1, 2 , 50ma/div ch3: en1, 2, 0.5v/div 0.65v 0v ch3 ch2 0.65v 200ma 0.65v 75ma * ch1: en2=gnd when measurement ch2: en1=gnd when measurement (17) load transient response (continued) typical performance characteristics (continued)
31/32 x c9503 series mark product series 4 XC9503b09 xxx mark product series b XC9503b09 xxx mark voltage (v) product series 0 9 0.9 XC9503b09 xxx mark oscillation frequency (khz) product series 2 180 XC9503b092xx 3 300 XC9503b093xx 5 500 XC9503b095xx packaging information marking rule represents product series represents type of dc/dc controller , represents fb voltage represents oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) note: no character inversion used. msop-10 msop-10 (top view) 3 8 7 6 9 10 4 5 2 1 * soldering fillet surface is not formed because the sides of the pins are not plated. usp-10 usp-10 (top view) msop-10, usp-10
32/32 XC9503 series 1. the products and product specifications contained herein are subject to change without notice to improve performance characteristics. consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. we assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. the products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. please use the products listed in this catalog 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 catalog may be copied or reproduced without the prior permission of torex semiconductor ltd.

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