1 sheet no.: op06061 notice the content of data sheet is subject to change without prior notice. in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usin g any sharp device. features (unit:mm) applications terminal 1.mobile phone 2.dsc 3.pda PQ6CB11X1CP pq6c b11x1cp 1.high switching voltage :max.30v (capable of driving max 6 leds in series connection) 2. switching current: 250ma 3.high frequency pwm control :1.2mhz 4.high efficiency(efficiency 90%) 5.built-in overheat, overcurrent protection functions 6.built-in soft start function 7. rohs directive compliant v in absolute maximum ratings parameter symbol unit v v v v v (ta=25c) c c c c 6 rating input voltage output voltage v o 30 switching voltage v sw 30 control voltage ctrl v in feed back voltage fb 6 switching current i sw 250 ma power dissipation pd 350 mw junction temperature t j 150 operating temperature t opr -40 to +85 260(10s) storage temperature t stg -40 to +150 soldering temperature t sol operating conditions parameter symbol unit c rating operating junction temperature -40 to +125 t j lead finish:au plating product mass: ( 10mg) ( ) : typical dimensions compact smd cmos step-up led driver s (0.038) 0.80.1 0.140.1 2.00.2 1.00.15 0.80.15 0.50.15 0.50.15 0.20.1 (0.1)8 0.30.156 0.20.15 ?? 1.80.2 c06 (old din standard) lot.no. model no. feed back terminal(fb) gnd terminal switch terminal(v sw ) v in terminal(v in ) ovp terminal(v o ) control terminal(ctrl) outline dimensions
2 sheet no.: op06061 electrical characteristics PQ6CB11X1CP v ma % parameter reference voltage oscillation frequency overcurrent detection level maximum duty ctrl pin bias current on-resistance symbol conditions min. typ. max. unit 2 - 0.8 1.6 - 0.1 1 - 90 -- - 90.3 95 99.7 30 100 1 1.4 - - - - - 1.2 90 250 - - - - 1.7 2.5 0.05 1 - - - 0.4 1 2.7 26 (unless otherwise specified,condition shall be v in =vctrl=3.6v,v o =10v,i o =20ma,ta=25 c) input-output voltage range - efficiency - on-state voltage for control fo mv na ma v v mhz v ref v ctrl 0v d max i sd duty=70%,switching current peak a r on i sw 250ma v c(on) ovp v in i switching,i o 0ma 3 leds i fb v in 3v i l i leak v sw 28v,v in =v ctrl =0v a v c(off) a i ctrl - 5.5 overvoltage detecting level 5pin 28 30 v overvoltage detecting hysteresis level ovp(hys) 5pin - quiescent current stand-by current error amplifier fb pin bias current oscllator % power switch - - leakage current control terminal off-state voltage for control --- 50 v on/off circuit soft start circuit ctrl v o fb gnd pwm cmp. error amp 95mv over voltage protection v in c in v in v sw l d rset c o block diagram 2.2 f 0.1 f gnd 6 3 4 2 v in 3.6v c in v in r set 4.75 c o ctrl on/off l 22 h v sw d fb 1 5 v o 20ma i o example of application control circuit osc
3 sheet no.: op06061 PQ6CB11X1CP input voltage v in (v) fig.1 standard measuring circuit l:vlp4612(tdk co.,ltd.) d:ma2z720(matsushita electric industrial co.,ltd) output on 2.2 f 1 f 6 3 4 2 v in c in c o i ctrl l 22 h d 1 5 a v c a iq i sd a i l i leak a i fb r 2 105.3k r 1 1k v i o v ref v o o n / off control logic 4pin low high open off off -40 -25 0 75 25 125 0 100 200 300 400 50 85 100 150 p d : mounting pcb -1.0 -25 0 25 50 75 100 125 -50 -0.5 0 0.5 1.0 v in =v ctrl =3.6v l=22 h white led:3leds i o =20ma -1.0 -0.5 0 0.5 1.0 3.2 3.6 3.8 4 3 3.4 4.2 60 65 80 85 100 15 5 led current i o (ma) 10 20 70 75 90 95 power dissipation pd (mw) ambient temperature ta (c) fig.3 reference voltage fluctuation vs. junction temperature junction temperature tj ( c ) reference voltage fluctuation v ref (%) fig.4 reference voltage fluctuation vs. input voltage reference voltage fluctuation v ref (%) fig.5 effciency vs. led current effciency ( ) fig.2 power dissipation vs.ambient temperature v in =v ctrl =3.6v l=22 h v f =3.8v,3led i o =20ma ta=25 ? c v in =v ctrl =3.6v l=22 h v f =3.8v,3led ta=25 ? c
4 sheet no.: op06061 fig.7 oscillation frequency fluctuation vs. junction temperature junction temperature tj ( c ) oscillation frequency fluctuation f o (%) junction temperature tj ( c ) fig.10 use range of white led PQ6CB11X1CP 3.2 3.6 3.8 4 3 input voltage v in (v) 3.4 4.2 60 65 80 85 100 70 75 90 95 2leds 3leds 4leds -10 -25 0 25 50 75 100 125 -50 -5 0 5 10 v in =v ctrl =3.6v 3leds / 20ma c in =2.2 f c o =0.1 f l=22 h -25 0 25 50 75 100 125 -50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 v in =v ctrl =3.6v v sw =3.6v i sw =250ma -25 0 25 50 75 100 125 -50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 v in =3.6v 3leds / 5ma c in =2.2 f c o =0.1 f l=22 h current-limit fig.6 effciency vs. input voltage effciency ( ) fig.8 on-resistance vs. junction temperature on-resistance r on ( ) fig.9 on / off-state voltage for control vs. junction temperature on/off-state voltage for control v c (v) junction temperature tj ( c ) this product monitors the switch current at every cycle and limits the switch current not to exceed the overcurrent detection level. please set the white led current under the maximum led current shown in the graph indicated below within the range of input voltage (v in ) you use. maximum led current (ma) 3 4 4.5 5 2.5 v in (v) 3.5 5.5 0 20 80 100 40 60 120 140 2led 3led 4led 6led ta=25 ? c vf=3.8v(2 4leds) vf=3.5v(6leds) l=22 h v f =3.8v i o =20ma ta=25 ? c
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