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| 1 8 . $ p o u s p m m f e 4 u f q? 6 q % $ % $ $ p o u s p m m f s t $ p o w f s u f s t 4 f s j f t 437 4 ( f o f s b m % f t d s j q u j p o ' f b u v s f t " q q m j d b u j p o t cmos low power consumption operating voltage : 0.9v~10.0v output voltage range : 2.0v~7.0v output voltage accuracy : 2.5% selectable oscillator frequency : 50khz, 100khz, 180khz the xc6371 series are a group of pwm controlled step-up dc/dc converters. on-chip proprietary phase compensation and soft start-up circuits ensure excellent transient response and improved performance. output voltage can be selected from 2.0v to 7.0v in 0.1v increments (accuracy: ?.5%). oscillator frequency is also selectable from three frequencies; 50, 100, and 180khz (accuracy: ?5%). every built-in switching transistor type enables a step-up circuit to be configured using only three external components; a coil, a diode, and a capacitor. external transistor versions are available to accommodate high output current applications. 5-pin packages, which are provided with either a ce (chip enable) function that reduces power consumption during shut-down mode, or a v dd pin (separated power and voltage detect pins) are available. sot-89 small package. operating (start-up) voltage range : 0.9v~10v output voltage range : 2.0v~7.0v in 0.1v increments highly accurate : set-up voltage ?.5% oscillator frequency : 50khz, 100khz, 180khz (?5%) selectable maximum output currents (tr built-in) : typ.100ma @ v in =3.0, v out =5.0v .....note(1) highly efficient (tr built-in) : typ.85% @ v in =3.0, v out =5.0v .....note(1) built-in switching transistor type and an external tr type are available. five-lead packaged units offer either chip enable or independent v out pin option. phase compensation and soft start-up circuits built-in small package : sot-89 mini-power mold (3-pin, 5-pin) note(1): performance depends on external components and pcb layout. cellular phones, pagers palmtops cameras, video recorders portable products 5 z q j d b m " q q m j d b u j p o $ j s d v j u 5 z q j d b m 1 f s g p s n b o d f $ i b s b d u f s j t u j d 4 0 5 5 0 1 7 * & 8 ( / % 7 0 6 5 $ - 5 b o u b m v n - 4 % 7 * / $ * / -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u 7 p m u b h f * 0 6 5 n " 9 $ " 1 3 & g g j d j f o d z & ' ' * 7 7 7 7 7 * / 7 4 @ 9 $ ?? 9 $ 4 f s j f t 438 4 1 j o $ p o g j h v s b u j p o 1 j o " t t j h o n f o u (xc6371a,xc6371b) pin number xc6371a xc6371b pin name function 11v ss ground 22v out output voltage monitor / ic internal power supply 3 lx switch 3 ext external switch transistor drive (xc6371c,xc6371d) pin number xc6371c xc6371d pin name function 55v ss ground 22v out output voltage monitor / ic internal power supply 4 lx switch 4 ext external switch transistor drive 3 3 ce chip enable 1 1 nc no connection (xc6371e,xc6371f) pin number xc6371e xc6371f pin name function 55v ss ground 22v dd ic internal power supply 4 lx switch 4 ext external switch transistor drive 33v out output voltage monitor 1 1 nc no connection 4 0 5 5 0 1 7 * & 8 4 0 5 5 0 1 7 * & 8 4 @ 9 $ ?? 9 $ 4 f s j f t 439 4 1 s p e v d u $ m b t t j g j d b u j p o selection guide part type package features operation mode switching related additional function xc6371a sot-89 switching transistor incorporated standard type. low ripple and highly efficient from low current to high current. built-in transistor "lx"lead xc6371b sot-89 external switching transistor standard type. adding external transistor can improve the output capability up to several hundred ma. external transistor "ext"lead xc6371c sot-89-5 stand-by (ce)function added version to the xc6371a. stand-by current: 0.5 a max. built-in transistor "lx"lead xc6371d sot-89-5 ------------ ------------ chip enable(ce) chip enable(ce) stand-by (ce)function added version to the xc6371b. stand-by current: 0.5 a max. external transistor "ext"lead xc6371e sot-89-5 individual power supply and set-up voltage sensing leads are available. built-in transistor "lx"lead separated "v dd "and"v out "leads xc6371f pwm pwm pwm pwm pwm pwm sot-89-5 individual power supply and set-up voltage sensing leads are available. external transistor "ext"lead separated "v dd "and"v out "leads r t y p r l w e a b c d e f 0 3-pin. built-in switching transistor 3-pin. external switching transistor stand-by capability. built-in switching transistor stand-by capability. external switching transistor separated v dd and v out . built-in switching transistor separated v dd and v out . external switching transistor osc frequency 50khz output voltage e.g.,v out =3.5v ? w =3, e =5 1 2 osc frequency 100khz osc frequency 180khz embossed tape: standard feed embossed tape: reverse feed package q =a ~ b ? sot-89 q =c ~ f ? sot-89-5 xc6371 series pwm controlled xc6371 qwerty q ordering information 4 @ 9 $ ?? 9 $ 4 f s j f t 440 4 1 b d l b h j o h * o g p s n b u j p o sot-89 sot-89-5 ? ? n j o n b y ? ? ? ? ? ? ? ? ? ? n j o n j o n b y ? ? ? ? ? ? ? 4 @ 9 $ ?? 9 $ 4 f s j f t 441 4 . b s l j o h 4 0 5 5 0 1 7 * & 8 q w e r 2 1 4 3 4 0 5 5 0 1 7 * & 8 q 3 f q s f t f o u t u i f 1 s p e v d u $ m b t t j g j d b u j p o 9 $ ' % & 4 * ( / " 5 0 3 9 $ & 9 $ % 9 $ $ 9 $ # 9 $ " w 3 f q s f t f o u t u i f j o u f h f s p g u i f 0 v u q v u 7 p m u b h f b o e 0 t d j m m b u p s ' s f r v f o d z 0 4 $ * - - " 5 0 3 ' 3 & 2 6 & / $ : l ) [ * / 5 & ( & 3 0 ' 5 ) & 0 6 5 1 6 5 7 0 - 5 " ( & # r % f o p u f t u i f q s p e v d u j p o m p u o v n c f s u p " u p ; s f q f b u f e ( * + 0 2 8 f y d f q u f e 1 3 0 % 6 $ 5 / " . & $ % & ' ) , " # " # 4 9 e 3 f q s f t f o u t u i f e f d j n b m o v n c f s p g u i f 0 v u q v u 7 p m u b h f b o e 0 t d j m m b u p s ' s f r v f o d z 0 4 $ * - - " 5 0 3 ' 3 & 2 6 & / $ : l ) [ 5 ) & % & $ * . " - / 6 . # & 3 0 ' 0 6 5 1 6 5 7 0 - 5 " ( & " # ) , - . $ % & ' 4 @ 9 $ ?? parameter symbol ratings units v out input voltage v out 12 v lx pin voltage v lx 12 v lx pin current i lx 400 ma ext pinvoltage v ext v ss 0.3 ~ v out +0.3 v ext pin current i ext 50 ma continuous total power dissipation p d 500 mw ce input voltage v ce 12 v v dd input voltage v dd 12 v operating ambient temperature topr 30 ~ +80 c storage temperature tstg 40 ~ +125 c ta=25 c 9 $ 4 f s j f t 442 4 7 - y m j n j u f s # v g g f s 1 8 . $ p o u s p m 0 4 $ , ) [ $ i j q & o b c m f $ & 7 % % 9 $ "? 9 $ % 7 s f g 4 p g u 4 u b s u 1 i b t f d p n q - y 7 4 4 & 9 5 7 0 6 5 7 - y m j n j u f s # v g g f s 1 8 . $ p o u s p m 0 4 $ , ) [ 7 % % xc6371e and xc6371f 7 s f g 1 i b t f d p n q 4 p g u 4 u b s u - y 7 4 4 & 9 5 7 % % 7 0 6 built-in tr.type units use the lx pin. external tr.type units use the ext pin. the ce pin is only used with the xc6371c and xc6371d. the v out pin is used also for the v dd pin. note: the v dd pin is only used with xc6371e and xc6371f. built-in tr.type units use the lx pin. external tr.type units use the ext pin. note: parameter output voltage maximum input voltage operation start-up voltage oscillation start-up voltage supply current 1 supply current 2 symbol v out v in v st1 v st2 i dd 1 i dd 2 same as v st 2. apply output voltage ? 1.1 to v out . lx switch-on resistance r swon same as i dd 1. v lx =0.4v. lx leakage current oscillator frequency i lxl f osc no external components. v out =v lx =10v. maximum duty ratio maxdty same as i dd 1. measuring of lx waveform. same as i dd 1. measuring of lx waveform. effi efficiency t ss slow-start time measuring conditions : unless otherwise specified, v in =v out ? 0.6, i out =50ma. see typical application circuits, fig.1. conditions external components connected. i out =1ma. no external components. apply voltage to v out . lx : 10k ? pull-up to 5v. same as v st 2. apply output voltage ? 0.95 to v out . min 4.875 10 typ 5.000 max 5.125 0.90 units v 0.80 a 133.880.2 a 1.4 16.5 8.2 ? 2.4 a 85 100 1.0 khz 80 87 115 %92 lx limit voltage v lxlmt same as i dd 1. apply output voltage to lx. voltage required to produce f osc ? 2 0.7 v 1.3 % 85 ms v 4.0 10.0 20.0 v v xc6371a501pr ta=25 c v out =5.0v,f osc =100kh z " c t p m v u f . b y j n v n 3 b u j o h t # m p d l % j b h s b n & m f d u s j d b m $ i b s b d u f s j t u j d t 4 @ 9 $ ?? 9 $ 4 f s j f t 443 4 xc6371b501pr v out =5.0v,fosc=100khz ta=25 c parameter output voltage maximum input voltage oscillation start-up voltage supply current 1 supply current 2 ext"high" on resistance ext"low" on resistance oscillator frequency maximum duty ratio efficiency slow-start time symbol v out v in v st2 i dd 1 i dd 2 r exth r extl f osc maxdty effi t ss v v v a a ? ? kh z % % ms 5.125 0.80 66.8 16.5 62.5 50 115 20.0 92 5.000 40.0 8.2 37.5 30 100 85 87 10.0 4.875 10 85 80 4.0 conditions same as v st 2. apply output voltage ? 0.95 to v out . no external components. apply voltage to v out . operation start-up voltage v st1 v0.90 external components connected.i out =1ma. same as v st 2. apply output voltage ? 1.1 to v out . same as i dd 1. v ext = 0.4v. same as i dd 1. v ext =0.4v. same as i dd 1. measuring of ext waveform. same as i dd 1. measuring of ext waveform. min typ max units measuring conditions: unless otherwise specified, v in =v out ? 0.6, i out =50ma. see typical application circuits, fig.2. xc6371c501pr v out =5.0v,f osc =100khz ta=25 c parameter output voltage maximum input voltage oscillation start-up voltage supply current 1 supply current 2 lx leakage current osicillator frequency maximum duty ratio stand-by current ce"high"voltage symbol v out v in v st2 i dd 1 i dd 2 r swon i lxl f osc maxdty i stb v ceh v v v a a ? a kh z % a v 5.125 0.80 133.8 16.5 2.4 1.0 115 0.5 92 5.000 80.2 8.2 1.4 100 87 4.875 10 85 80 0.75 v cel i ceh i cel efficiency slow-start time effi t ss % ms20.0 85 10.04.0 conditions same as v st 2. apply output voltage ? 0.95 to v out . operation start-up voltage v st1 v0.90 external components connected.i out =1ma. same as v st 2. apply output voltage ? 1.1 to v out . same as i dd 1. v lx =0.4v. no external components. v out =vlx=10v. same as i dd 1. measuring of lx waveform. same as i dd 1. measuring of lx waveform. same as i dd 1. same as i dd 1. existence of lx oscillation. ce"low"voltage ce"high"current ce"low"current lx limit voltage vlxlmt v a a v 0.20 0.25 0.25 1.30.7 same as i dd 1. disappearance of l x oscillation. same as i dd 1.v ce =v out ? 0.95. same as i dd 1. v ce =0v. same as i dd 1. apply output voltage to lx. voltage required to produce f osc ? 2. no external components. apply voltage to v out . lx : 10k ? pull-up to 5v. min typ max units measuring conditions: unless otherwise specified, connect ce to v out, v in =v out ? 0.6, i out =50ma. see typical application circuits, fig.3. lx switch- on resistance 4 @ 9 $ ?? 9 $ 4 f s j f t 444 4 xc6371d501pr ta=25 c v out =5.0v,f osc =100khz parameter symbol conditions min typ max units output voltage v out 4.875 5.000 5.125 v maximum input voltage v in 10 v operation start-up voltage v st1 external components connected. i out =1ma. 0.90 v oscillation start-up voltage v st2 no external components. apply voltage to vout. 0.80 v i dd 1 supply current 1 same as v st 2. apply output voltage ? 0.95 to v out . 40.0 66.8 a supply current 2 i dd 2 same as v st 2. apply output voltage ? 1.1 to v out . 8.2 16.5 a ext "high" on resistance r exth same as i dd 1. v ext = 0.4v. 37.5 62.5 ? ext "low" on resistance r extl same as i dd 1. v ext =0.4v. 5030 ? same as i dd 1. measuring of ext waveform. same as i dd 1. existence of lx oscillation. same as i dd 1. disappearance of lx oscillation. oscillator frequency f osc same as i dd 1. measuring of ext waveform. 85 100 115 khz maximum duty ratio maxdty 80 87 92 % stand-by current i stb same as i dd 1. 0.5 a ce"high"current i ceh same as i dd 1.v ce =v out ? 0.95. 0.25 a ce"low"current i cel same as i dd 1.v ce =0v. 0.25 a efficiency effi 85 % slow-start time t ss 4.0 10.0 20.0 ms ce"high"voltage v ceh 0.75 v ce"low"voltage v cel 0.20 v measuring conditions: unless otherwise specified, connect ce to v out, v in =v out ? 0.6, i out =50ma. see typical application circuits,fig.4. xc6371e501pr ta=25 c v out =5.0v,f osc =100kh z parameter output voltage maximum input voltage operation start-up voltage oscillation start-up voltage v out v in v st1 v st2 i dd 1 i dd 2 r swon i lxl f osc maxdty vl xlmt effi t ss supply current 1 supply current 2 lx switch-on resistance lx leakage current osicillator frequency maximum duty ratio lx limit voltage efficiency slow-start time symbol conditions external components connected. i out =1ma. no external components. apply voltage to v out . same as v st 2. apply output voltage ? 0.95 to v out . same as v st 2. apply output voltage ? 1.1 to v out . same as i dd 1. v lx =0.4v. no external components. v out =v lx =10v. same as i dd 1. measuring of lx waveform. same as i dd 1. measuring of lx waveform. same as i dd 1. apply output voltage to lx. voltage required to produce f osc ? 2. min typ max units 4.875 5.000 5.125 v 10 v 0.90 v 0.80 v 80.2 133.8 a 8.2 1.4 16.5 2.4 1.0 a ? a 85 100 115 khz 80 87 92 % 0.7 1.3 v 85 % 4.0 10.0 20.0 ms when the v dd and v out pins are independently used, the voltage range at the v dd pin should be 2.2v to 10v. the ic operates from v dd =0.8v. however, output voltage and oscillator frequency are properly stabilized when v dd =2.2v or higher. note: measuring conditions: unless otherwise specified, connect v dd to v out, v in =v out ? 0.6, i out =50ma. seetypical application circuits,fig.5. 4 @ 9 $ ?? 9 $ 4 f s j f t 445 4 xc6371f501pr ta=25 c v out =5.0v,f osc =100kh z parameter output voltage maximum input voltage symbol v out v in conditions min 4.875 10 typ 5.000 max 5.125 units v operation start-up voltage v st 1 external components connected. i out =1ma. 0.90 v oscillation start-up voltage v st 2 no external components. appply voltage to v out . v supply current 1 i dd 1 same as v st 2. apply output voltage ? 0.95 to v out . same as v st 2. apply output voltage ? 1.1 to v out . 40.0 66.8 a supply current 2 i dd 2 8.2 16.5 a ext "high" on-resistance r exth same as i dd 1. v ext = 0.4v. same as i dd 1.measuring of ext waveform. same as i dd 1.measuring of ext waveform. same as i dd 1. v ext =0.4v. 37.5 62.5 ? ext "low" on-resistance r extl 30 50 ? oscillator frequency f osc 100 115 khz maximum duty ratio maxdty 85 85 87 92 % efficiency effi 85 % t ss 20.0 slow-start time 4.0 10.0 ms v measuring conditions: unless otherwise specified, connect v dd to v out, v in =v out ? 0.6, i out =50ma. see typical application circuits, fig.6. when the v dd and v out pins are independently used, the voltage range at the v dd pin should be 2.2v to 10v. the ic operates from v dd =0.8v. however, output voltage and oscillator frequency are properly stabilized when v dd =2.2v or higher. note : 0.80 4 0 5 5 0 1 7 * & 8 ( / % fig.1 xc6371a application 7 0 6 5 4 0 5 5 0 1 7 * & 8 7 0 6 5 fig.2 xc6371b application ( / % $ - 5 b o u b m v n $ - 5 b o u b m v n - 4 % 4 % 7 * / 7 * / - 5 s $ # 3 # $ * / $ * / l : 100 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor; nichcon, mce) c in : 16v220 f (alminium electrolytic capacitor) l: 47 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor; nichcon mce) c in : 16v220 f (alminium electrolytic capacitor) r b :1k ? , c b :3300pf (f osc =100khz) tr : 2sc3279, 2sd1628g 5 z q j d b m " q q m j d b u j p o $ j s d v j u t 4 @ 9 $ ?? 9 $ 4 f s j f t 446 4 5 0 1 7 * & 8 4 0 5 7 0 6 5 5 0 1 7 * & 8 4 0 5 7 0 6 5 5 s fig.3 xc6371c application $ & fig.4 xc6371d application $ & ( / % ( / % $ - 5 b o u b m v n $ - 5 b o u b m v n 4 % 4 % 7 * / - $ # 3 # 7 * / - $ * / $ * / l : 100 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor, nichicon, mce) c in : 16v220 f (alminium electrolytic capacitor) l: 47 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor, nichicon, mce) c in : 16v220 f (alminium electrolytic capacitor) r b :1k ? , c b : 3300pf (f osc =100kh z ) tr : 2sc3279, 2sd1628g fig.5 xc6371e application fig.6 xc6371f application 5 0 1 7 * & 8 4 0 5 7 0 6 5 5 0 1 7 * & 8 4 0 5 7 0 6 5 ( / % ( / % 4 % - 5 s 4 % 7 * / - $ # 3 # 7 % % 7 % % $ - 5 b o u b m v n $ - 5 b o u b m v n $ * / 7 * / $ * / l : 100 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor, nichicon, mce) c in : 16v220 f (alminium electrolytic capacitor) l: 47 h (sumida, cr-54) sd : ma2q735 (schottky diode; matsushita) c l : 16v 47 f (tantalum capacitor, nichicon, mce) c in : 16v220 f (alminium electrolytic capacitor) r b :1k ? ,c b : 3300pf (f osc =100kh z ) tr : 2sc3279, 2sd1628g 4 @ 9 $ ?? 9 $ 4 f s j f t 447 4 -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 9 $ " 1 3 0 v u q v u 7 p m u b h f 7 0 6 5 7 7 7 7 7 7 7 * / 7 -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 9 $ " 1 3 0 v u q v u 7 p m u b h f 7 0 6 5 7 7 7 7 7 7 * / 7 -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 9 $ " 1 3 & g g j d j f o d z & ' ' * 7 7 7 7 7 * / 7 (2) efficiency vs. output current -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 9 $ " 1 3 & g g j d j f o d z & ' ' * 7 7 7 7 7 * / 7 7 (3) ripple voltage vs. output current 7 9 $ " 1 3 -1 ) $' | $ - 1 ' 5 b o u b m v n 7 7 7 7 3 j q q m f 7 p m u b h f 7 s n 7 q q 0 v u q v u $ v s s f o u * 0 6 5 n " 7 * / 7 7 * / 7 7 9 $ " 1 3 7 7 7 3 j q q m f 7 p m u b h f 7 s n 7 q q -1 ) $ 3 | $ - 1 ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 5 z q j d b m 1 f s g p s n b o d f $ i b s b d u f s j t u j d t (1) output voltage vs. output current 4 @ 9 $ ?? 9 $ 4 f s j f t 448 4 0 v u q v u 7 p m u b h f 0 v u q v u $ v s s f o u 9 $ " - ) $ 3 $ ' 5 b o u b m v n * 0 6 5 n " n " 7 * / 7 5 j n f n t f d e j w 0 v u q v u 7 p m u b h f 7 0 6 5 7 output current:i out (ma) (4)no load, input current vs. input voltage 9 $ " 1 3 -1 ) $ 3 | $ - 1 ' 5 b o u b m v n * o q v u 7 p m u b h f 7 * / 7 * o q v u $ v s s f o u * * / " 9 $ " 1 3 * o q v u $ v s s f o u * * / " * o q v u 7 p m u b h f 7 * / 7 -1 ) $' | $ - 1 ' 5 b o u b m v n (5) operating start voltage/retain voltage vs. output current 9 $ " - ) $ 3 $ ' 5 b o u b m v n 0 v u q v u $ v s s f o u * 0 6 5 n " 0 q f s b u j o h 4 u b s u 7 p m u b h f 3 f u b j o 7 p m u b h f 7 4 5 7 ) - % 7 7 4 5 7 ) - % (6) load transient response 4 @ 9 $ ?? 9 $ 4 f s j f t 449 4 7 * / 7 7 7 7 7 7 * / 7 7 7 7 7 * / 7 7 7 7 7 * / 7 7 7 7 7 7 * / 7 7 7 7 7 * / 7 7 7 7 - ) $ 3 3 # $ # ' output current:i out (ma) output voltage:v out (v) 9 $ # 7 l ) [ - ) $ 3 3 # $ # ' output current:i out (ma) efficiency:effi (%) efficiency:effi (%) 9 $ # 7 l ) [ - ) $ 3 3 # $ # ' output current:i out (ma) 9 $ # 7 l ) [ - ) $ 3 3 # $ # ' output current:i out (ma) output voltage:v out (v) 9 $ # 7 l ) [ - ) $ 3 3 # $ # ' output current:i out (ma) ripple voltage:vr (mvp-p) 9 $ # 7 l ) [ - ) $ 3 3 # $ # ' output current:i out (ma) ripple voltage:vr (mvp-p) 9 $ # 7 l ) [ < external components > c in =100 f (electrolytic), c l =47 f (tantalum) ? 2, sd:ma735, tr:2sd1628g (8) efficiency vs. output current (9) ripple voltage vs. output current (7) output voltage vs. output current 4 @ 9 $ ?? 9 $ 4 f s j f t 450 4 * 0 6 5 n " n " 7 * / 7 - ) $ 3 3 # l $ # q ' time (20msec/div) output voltage:v out (v) output current:i out (ma) 9 $ # 7 l ) [ * 0 6 5 n " n " 7 * / 7 - ) $ 3 3 # l $ # q ' (external components) c in =47 f (tantalum) c l =47 f (tantalum) ? 2 sd:ma735 tr :2sd1628g time (20msec/div) output voltage:v out (v) output current:i out (ma) 9 $ # 7 l ) [ output current output voltage output current output voltage (10) load transient response 4 @ 9 $ ?? |
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