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553 xc6367_6368 etr0401_001.doc input voltage range : 0.9~10.0v output voltage range : 1.5~6.5v( 2.5%) oscillator frequency : 300khz( 15%) pwm/pfm switching control (xc6368) high efficiency : 84% (typ.) sot-25 package general description the xc6367/68 series are multi-functional step-up dc/dc converter controllers with built-in high speed, low on resistance drivers. large output currents are possible using an externally connected transistor, coil, diode and capacitor. output voltage is selectable in 100mv increments within a range of 1.5v ~ 6.5v ( 2.5%). for output voltages outside this range, we recommend fb version, which has a 1.0v internal reference voltage. using the fb version, the required output voltage can be set-up using 2 external resistors. with a 300khz oscillation frequency, the size of the external components can be reduced. control switches from pwm to pfm during light loads with the xc6368 (pwm/pfm switchable) and the series is highly efficient from light loads to large output currents. soft start time of xc6367/68a, b, and c series is internally set to 10msec and xc6367/68c, d, and f series regulate soft-star t time by connecting resistors and capacitors externally. during stand-by (ce pin "low"), supply current is reduced to less than 0.5 a. applications electronic information organizers palmtops cellular and portable phones portable audio systems various multi-function power supplies typical application circuit typical performance characteristics features input voltage range : 0.9v ~ 10v operating voltage range : 2.0v ~ 10v output voltage range : 1.5v ~ 6.5v programmable in 100mv increments ( 2.5%) oscillation frequency : 300khz, 100khz ( 15%) custom products for 180khz, 500khz output current : more than 200ma (v in =1.8v, v out =3.3v) high efficiency : 84% (typ.) stand-by capability : istb=0.5 a (max.) selection : soft-start set-up external output voltage set-up internal(v out ) output voltage set-up external(fb) package : sot-25 go-compatible
554 xc6367/6368 series pin number xc6367/xc6368 a, b, c, d e, f pin name function 5 5 ext : external transistor connection 2 - v dd : supply voltage input 4 4 gnd : ground 3 1 ce : chip enable (c, d, f types: soft start external set-up, soft start capacitor connected) 1 2 v out (fb) : output voltage monitor (e, f types: output voltage monitor, power supply) (b, d types: output voltage external set-up) pin configuration pin assignment product classification selection guide
555 xc6367/6368 series designator description symbol description a : v out type: v out internally set-up, soft -start internally set-up b : fb type: v out externally set-up, soft-s tart internally set-up c : v out type: v out internally set-up, soft-s tart externally set-up d : fb type: v out externally set-up, soft-s tart externally set-up e : v out type: v out internally set-up, soft -start internally set-up type of dc/dc converter f : v out type: v out internally set-up, soft-s tart externally set-up 15 ~ 65 : v out type: 3.0v output =3, =0 output voltage 10 : fb type (b, d types): 10 fixed =1, =0 fixed 3 : 300khz 1 : 100khz 2 : 180khz (custom) oscillation frequency 5 : 500khz (custom) package m : sot-25 (sot-23-5) r : embossed tape, standard feed device orientation l : embossed tape, reverse feed packaging information sot-25 ordering information product classification ( continued ) xc6367 ????? pwm control xc6368 ????? pwm/pfm switching control 0.4 0.95 1.9 0.2 2.9 0.2 +0.1 -0.05 1.1 0.1 0 0.1 0.15 min 0.2 +0.1 -0.05 2.8 0.2 1.6 +0.2 -0.1
556 xc6367/6368 series mark product series mark product series a xc6367a k xc6368a b xc6367b l xc6368b c xc6367c m xc6368c d xc6367d n xc6368d e xc6367e p xc6368e f xc6367f r xc6368f oscillation frequency (khz) output voltage (v) 100 180 300 500 1 b 1 1 b 2 c 2 2 c 3 d 3 3 d 4 e 4 4 e 5 f 5 5 f 6 h 6 6 h for custom product s oscillation frequency (khz) output voltage (v) 100 180 300 500 0 0 0 a a 1 1 1 b b 2 2 2 c c 3 3 3 d d 4 4 4 e e 5 5 5 f f 6 6 6 h h 7 7 7 k k 8 8 8 l l 9 9 9 m m marking rule xc6367/6368 series represents product series represents integer of output voltage and oscillation frequency represents decimal number of output voltage and oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) sot-25 (top view)
557 xc6367/6368 series block diagrams gnd ext v dd pwm comparator buffer, driver + - ramp wave generator, osc pwm/pfm controller phase compensation error amp. + - vre with soft start, ce v out ce x c6367, xc6368 series a, c, e, f types (v out ) note : connecting v out and v dd internally with e f types. gn d ext v dd pwm comparator buffer, driver + - ramp wave generator, osc pwm/pfm controller phase compensation error amp. + - vref with soft start, ce fb ce xc6367, xc6368 series b,d types (fb) gnd
558 xc6367/6368 series parameter symbol ratings units v dd pin voltage v dd -0.3 ~ +12.0 v v out pin voltage v out -0.3 ~ +12.0 v fb pin voltage v fb -0.3 ~ +12.0 v ce pin voltage v ce -0.3 ~ +12.0 v ext pin voltage v ext -0.3 ~ v dd +0.3 v ext pin current i ext 100 ma power dissipation pd 150 mw operating temperature range topr -30 ~ +80 storage temperature range tstg -40 ~ +125 parameter symbol conditions min. typ. max. units output voltage v out 3.218 3.300 3.383 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v out =ce: apply voltage - - 0.8 v oscillation hold voltage v hld tr: use of a 2sx1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v out =ce=setting output voltage x 0.95 - 130 200 a supply current 2 i dd2 v out =ce=setting output voltage + 0.5v - 20 35 a stand-by current i stb v out =setting output voltage x 0.95, ce=0v - - 0.5 a oscillator frequency fosc same as i dd1 255 300 345 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (* 3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v out =setting output voltage x0.95 0.65 - - v ce "low" voltage v cel v out =setting output voltage x0.95 - - 0.20 v ext "high" on resistance r exth same as i dd1 , vext=v out -0.4v - 29 43 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 19 27 efficiency (* 2) effi - 84 - % soft-start time t ss 5 10 20 msec a bsolute maximum ratings ta = 2 5 electrical characteristics xc6367a333mr, xc6368a333mr conditions: unless otherwise stated, connect v dd to v out ; v in =setting output voltage x 0.6, i out =130ma note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). v out =3.3v, fosc=300khz, ta=25 *voltage is all ground standardized.
559 xc6367/6368 series parameter symbol conditions min. typ. max. units output voltage v out 4875 5.000 5.125 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v out =ce : apply voltage - - 0.8 v oscillation hold voltage v hld tr: 2sd1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v out =ce=setting output voltage x 0.95 - 180 280 a supply current 2 i dd2 v out =ce=setting output voltage + 0.5v - 22 38 a stand-by current i stb v out =setting output voltage x 0.95, ce=0v - - 0.5 a oscillation frequency fosc same as i dd1 255 300 345 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (* 3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v out =setting output voltage x0.95 0.65 - - v ce "low" voltage v cel v out =setting output voltage x0.95 - - 0.20 v ext "high" on resistance r exth same as i dd1 , v ext =v out -0.4v - 20 29 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 13 19 efficiency (* 2) effi - 87 - % soft-start time t ss connect r ss and c ss , ce:0v 3.0v (xc6367c/f and xc6368c/f series) 5 10 20 msec xc6367a503mr, xc6368a503mr conditions: unless otherwise specified, connect v dd to v out ; v in =setting output voltage x 0.6, i out =200ma note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). * 4: the values of supply voltage and note *1 do not appl y to xc6367e/f and xc6368e/f series. for xc6367e/f and xc6368e/f series, output voltage less than 2.0v cannot be set-up. v out =5.0v, fosc=300khz,ta=25 electrical characteristics (continued)
560 xc6367/6368 series parameter symbol conditions min. typ. max. units output voltage v out 2.925 3.000 3.075 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v dd =ce: apply voltage, fb=0v - - 0.8 v oscillation hold voltage v hld tr: 2sd1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v dd =ce=2.85v,fb=0v - 120 190 a supply current 2 i dd2 v dd =ce=3.5v,fb=1.2v - 20 34 a stand-by current i stb v dd =2.85v, ce=0v, fb=0v - - 0.5 a oscillation frequency fosc same as i dd1 255 300 345 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (* 3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v dd =2.85v,fb=0v 0.65 - - v ce "low" voltage v cel v dd =2.85v,fb=0v - - 0.20 v ext "high" on resistance r exth same as i dd1 , v ext =v dd -0.4v - 32 47 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 20 30 efficiency (* 2) effi - 84 - % soft-start time t ss connect r ss and c ss , ce:0v 3.0v (xc6367d/68d series) 5 10 20 msec xc6367b103mr, xc6368b103mr v out =3.0v , fosc=300khz , ta = 2 5 conditions: unless otherwise stated, v in =1.8v, i out =120ma external components : r fb1 = 400k , r fb2 = 200k , c fb = 47pf note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). electrical characteristics (continued)
561 xc6367/6368 series parameter symbol conditions min. typ. max. units output voltage v out 3.218 3.300 3.383 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v out =ce: apply voltage - - 0.8 v oscillation hold voltage v hld tr: 2sd1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v out =ce=setting output voltage x 0.95 - 50 100 a supply current 2 i dd2 v out =ce=setting output voltage + 0.5v - 11 20 a stand-by current i stb v out =setting output voltage x 0.95, ce=0v - - 0.5 a oscillation frequency fosc same as i dd1 85 100 115 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (* 3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v out =setting output voltage x0.95 0.65 - - v ce "low" voltage v cel v out =setting output voltage x0.95 - - 0.20 v ext "high" on resistance r exth same as i dd1 , v ext =v out -0.4v - 29 43 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 19 27 efficiency (* 2) effi - 84 - % soft-start time t ss 5 10 20 msec conditions: unless otherwise stated, connect v dd to v out ; v in =setting output voltage x 0.6, i out =130ma note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). xc6367a331mr, xc6368a331mr v out =3.3v, fosc=100khz, ta=25 electrical characteristics (continued)
562 xc6367/6368 series parameter symbol conditions min. typ. max. units output voltage v out 4875 5.000 5.125 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v out =ce: apply voltage - - 0.8 v oscillation hold voltage v hld tr: 2sx1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v out =ce=setting output voltage x 0.95 - 70 120 a supply current 2 i dd2 v out =ce=setting output voltage + 0.5v - 11 22 a stand-by current i stb v out =setting output voltage x 0.95, ce=0v - - 0.5 a oscillation frequency fosc same as i dd1 85 100 115 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (* 3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v out =setting output voltage x0.95 0.65 - - v ce "low" voltage v cel v out =setting output voltage x0.95 - - 0.20 v ext "high" on resistance r exth same as i dd1 , v ext =v out -0.4v - 20 29 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 13 19 efficiency (* 2) effi - 87 - % soft-start time t ss 5 10 20 msec conditions: unless otherwise stated, connect v dd to v out ; v in =setting output voltage x 0.6, i out =200ma note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). xc6367a501mr, xc6368a501mr v out =5.0v, fosc=100khz, ta=25 electrical characteristics (continued)
563 xc6367/6368 series parameter symbol conditions min. typ. max. units output voltage v out 2.925 3.000 3.075 v supply voltage (* 1) v dd 2.0 - 10.0 v maximum input voltage v in 10.0 - - v oscillation start voltage 1 v st1 tr: 2sd1628, i out =1.0ma - - 0.9 v oscillation start voltage 2 v st2 v dd =ce: apply voltage, fb=0v - - 0.8 v oscillation hold voltage v hld tr: 2sd1628, i out =1.0ma - - 0.7 v supply current 1 i dd1 v dd =ce=2.85v, fb=0v - 50 90 a supply current 2 i dd2 v dd =ce=3.5v, fb=1.2v - 11 20 a stand-by current i stb v dd =2.85v, ce=0v, fb=0v - - 0.5 a oscillation frequency fosc same as i dd1 85 100 115 khz maximum duty ratio maxdty same as i dd1 78 85 92 % pfm duty ratio (*3) pfmdty i out =0ma 15 25 35 % ce "high" voltage v ceh v dd =2.85v,fb=0v 0.65 - - v ce "low" voltage v cel v dd =2.85v,fb=0v - - 0.20 v ext "high" on resistance r exth same as i dd1 , v ext =v dd -0.4v - 32 47 ext "low" on resistance r extl same as i dd1 , v ext =0.4v - 20 30 efficiency (* 2) effi - 84 - % soft-start time t ss 5 10 20 msec xc6367b101mr, xc6368b101mr v out =3.0v, fosc=100khz, ta=25 conditions: unless otherwise stated, v in =1.8v, i out =120ma external components : r fb 1 = 400k , r fb 2 = 200k , c fb = 47pf note: * 1: when taking v dd from another power source please ensure that v dd = 2.0v or more. oscillation will occur with a value of v dd = 0.8v or more, but with a value of v dd = 2.0v or more, output voltage and oscillation frequency will be stable. * 2: effi = {[(output voltage) x (output current)] [(input voltage) x (input current)] x 100 * 3: applies to the xc6368 series only (duty ratio when control changes to pfm). electrical characteristics (continued)
564 xc6367/6368 series test circuits
565 xc6367/6368 series test circuits (continued)
566 xc6367/6368 series test circuits (continued)
567 xc6367/6368 series test circuits (continued)
568 xc6367/6368 series gate protection diode built-in mosfet r ds (on) xp161a1355pr 0.15 @ vgs=1.5v xp161a1265pr 0.095 @ vgs=2.5v tr : xp161a1355pr (n-ch power mosfet, torex) as the breakdown voltage of xp161a1355pr is 8v, take care with the power supply voltage. with output voltages over 6v, use the xp161a1265pr with a breakdown voltage of 12v. v st1 : xp161a1355pr = 1.2v (max.) xp161a1265pr = 1.5v (max.) l : 22 h (cr54, sumida fosc=300khz) 47 h (cr75, sumida fosc=100, 180khz) 10 h (cr54, sumida fosc=500khz) sd : ma2q735 (schottky diode, sumida matsushita) c in : 16v, 220 f (aluminium electrolytic capacitor) cl : 16v, 47 f + 47 f (tantalum capacitor, nichicon mce) npn tr type: tr : 2sd1628 (sanyo) rb : 500 (adjust according to load and tr. hfe levels) cb : 2200pf (ceramic type) set up so that cb < 1 (2 x rb x fosc x 0.7) c, d, f type (soft-start externally set-up): c ss : 0.1 f (ceramic capacitor) r ss : 470k (c, f type), 220k (d type) b, d type (fb versions) r fb : set up so that r fb1 r fb2 = v out - 1 (v out = setting output voltage), please use with r fb1 + r fb2 Q 2m c fb : set up so that fzfb = 1 (2 x x cfb x rfb1) is within the 0.1 to 20khz range (10khz conventional) adjustments necessary in respect of l, c l . e.g v out = 3.0v r fb1 = 400k , r fb2 = 200k , c fb = 47pf for using mosfet, we recommend using torex mosfet s, which has a gate protection diode built-in. test circuits (continued) external com p onents
569 xc6367/6368 series notes on use 1. take ample care to ensure that none of the ic's, nor the external component's, absolute maximum ratings are exceeded. 2. be extremely careful when selecting parts and do not limit your reference to the specific ations and characteristics fo r the dc/dc converter alone. the ic also depends, to a great extent, upon the external components. 3. arrange the peripherals in the environs of the ic. in order to reduce wiring impedance, use short, thick wires. in particular, wire the load capacitor as close as possible and strengthen the ground wiring sufficiently. 4. ground current during switching may cause the ic's operati ons to become unstable due to changes in ground voltage, so please strengthen the ic's gnd pin surroundings. external components 1.setting soft-start time in oder to lengthen soft-start time we recommend that you us e the c or d types of the series which have soft start time externally set-up. soft-start time (t ss ) is between min & max, as indicated in the gr aphs below, so please select soft-start capacito r value (c ss ) to suit your application. 2. r fb1 , c fb set up fzfb = 1 ( 2 x c fb x r fb1 ) in order to achieve a value for fzfb within the rang e of 0.1khz to 20khz, we recommend that values for r fb1 & c fb are selected from the area indicated within the lines of fzfb = 0.1khz and fzfb = 20 khz as shown on the graph below. please select combinations of values as close to the fzfb = 10khz line as possible.
570 xc6367/6368 series typical performance characteristics (1) output voltage vs. output current
571 xc6367/6368 series typical performance characteristics (continued) (1) output voltage vs. out put current (continued)
572 xc6367/6368 series typical performance char a cteristics (continued) (2) efficiency vs. output current
573 xc6367/6368 series typical performance characteristics (continued) (2) efficiency vs. output current (continued)
574 xc6367/6368 series (3) ripple voltage vs. output current typical performance characteristics (continued)
575 xc6367/6368 series (3) ripple voltage vs. output current (continued) typical performance characteristics (continued)
576 xc6367/6368 series typical performance characteristics (continued) (4) output voltage vs. ambient temperature (5) supply current 1 vs. ambient temperature (6) supply current 2 vs. ambient temperature (7) stand-by current vs. ambient temperature (8) ext "h" on resistance vs. ambient temperature (9) ext "l" on resistance vs. ambient temperature
577 xc6367/6368 series typical performance characteristics (continued) (10) oscillation frequency vs. ambient temperature (11) maximum duty ratio vs. ambient temperature (12) pfm duty ratio vs. ambient temperature (13) efficiency vs. ambient temperature (14) operation start volt age vs. ambient temperature (15) operation hold volt age vs. ambient temperature
578 xc6367/6368 series typical performance characteristics (continued) (16) oscillation start volt age vs. ambient temperature (17) soft-start time vs. ambient temperature (18) ce "l" voltage vs. ambient temperature (19) ce "h" voltage vs. ambient temperature
579 xc6367/6368 series (20) load transient response typical performance characteristics (continued)

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