ts34063 dc to dc converter controller 1/10 version: b13 so p - 8 dip - 8 general description ts34063 is a monolithic switching regulator and sub system intended for use as dc to dc converter. it c ontains an internal temperature compensated reference, comp arator, controlled duty cycle oscillator with an ac tive peak current limit circuit, drive and a high current out put switch. the ts34063 is specifically designed to be incorporated in step-up, step-down and voltage inve rting converter applications. ts34063 is offered in sop-8 and dip-8 package features power forward control circuit operating voltage from 3v to 40v low standby current current limit adjustable output switch current up to 1.5a variable oscillator frequency up to 100khz(max.) output voltage adjustable pin description name description sc switch collector se switch emitter ct timing capacitor gnd ground comp. comparator inverting input v cc v cc collector i pk ipk sense v driver driver applications charger xd-rom, xdsl products dc to dc converter ordering information part no. package packing ts34063cd c3 dip-8 50pcs / tube ts34063cs rl sop-8 2.5kpcs / 13 reel absolute maximum rating parameter symbol maximum unit supply voltage v cc 40 v comparator input voltage range v fb - 0.3 ~ 40 v switch collector output voltage v c(sw) 40 v switch emitter voltage v e(sw) 40 v switch collector to emitter voltage v ce(sw) 40 v driver collector voltage v c(driver) 40 v driver collector current (note 1) i c(driver) 100 ma output switching current i sw 1.5 a power dissipation dip-8 p d 1.0 w sop-8 0.5 operating ambient temperature range t opr -40 ~ +85 o c junction temperature range t j 0 ~ +125 o c storage temperature range t stg -65 ~ +150 o c note: maximum package power dissipation limits must be o bserved pin definition : 1. sc 5. comp 2. se 6. vcc 3. ct 7. ipk 4. gnd 8. vdriver
ts34063 dc to dc converter controller 2/10 version: b13 electrical characteristics (v cc =5v, ta =25 o c; unless otherwise noted.) parameter symbol test conditions min typ max unit oscillator (osc) frequency f osc c t = 1nf, vpin5= 0v 24 33 42 khz charge current i charge v cc = 5v ~ 40v 24 30 42 ua discharge current i discharge v cc = 5v ~ 40v 140 200 260 ua discharge to charge current ratio i discharge / i charge pin7 to v cc 5.2 6.5 7.5 -- current limit sense voltage v ipk(sense) i discharge = i charge 250 -- 350 mv output switch (note1) saturation voltage v ce(sat) i sw = 1a, pin1, 8 connected -- 1.0 1.3 v saturation voltage v ce(sat) i sw = 1a, id=50ma -- 0.45 0.7 v dc current gain h fe i sw = 1a, v ce = 0.5v 50 75 -- -- collector off-state current i c(off) v ce = 40v -- 0.01 100 ua comparator threshold voltage v ref 1.225 1.25 1.275 v line regulation reg line v cc = 3v ~ 40v -- -- 6 mv total device supply current i cc v cc = 5v ~ 40v, c t = 1nf, pin7= v cc , pin5> v th , pin2=gnd, remaining pins open -- 3 5 ma notes1: low duty cycle pulse techniques are used during te st to maintain junction temperature as close to amb ient temperature as possible note 2: if the output switch is driven into hard saturatio n (non-darlington configuration) at low switch curr ents (<=300ma) and high driver currents (>=30ma), it may take up to 2us for it to come out of saturation. t his condition will shorten the off time at frequencies >= 30khz, and is magnified at high temperature. thi s condition does not occur with a darlington configur ation, since the output switch cannot saturate. if a non- darlington configuration is used, the following out put drive condition is recommended: forced bata of output switch: ic output / (ic driver C 7ma*) >= 10 * the 100ohm resistor in the emitter of the driver divide requires about 7ma before the output switch conducts. block diagram
ts34063 dc to dc converter controller 3/10 version: b13 electrical characteristics curve fig 1. output switch on-off time vs. oscillator timing capacitor fig 2. timing capacitor wave form fig 3. oscillator frequency vs. timing capacitor fig 4. standby supply current vs. supply voltage fig 5. current limit sense voltage vs. temperature
ts34063 dc to dc converter controller 4/10 version: b13 typical application circuit test conditions results line regulation v in = 8v~16v, io= 175ma 30mv = 0.05% load regulation v in = 12v, io= 75ma to 175ma 10mv = 0.017% output ripple v in =12v, io= 175ma 400mvpp efficiency v in =12v, io= 175ma 87.7% output ripple with optional filter v in =12v, io= 175ma 40mvpp figure 7. step up converter
ts34063 dc to dc converter controller 5/10 version: b13 typical application circuit (continue) test conditions results line regulation v in = 15v~25v, io= 500ma 12mv = 12% load regulation v in = 25v, io= 50ma to 500ma 3mv = 0.03% output ripple v in =25v, io= 500ma 120mvpp short circuit current v in =25v, r l = 0.1m 1.1a efficiency v in =25v, io= 500ma 83.7% output ripple with optional filter v in =25v, io= 500ma 40mvpp figure 9. step down converter
ts34063 dc to dc converter controller 6/10 version: b13 typical application circuit (continue) test conditions results line regulation v in = 4.5v~6v, io= 100ma 3mv = 120.012% load regulation v in = 5v, io= 10ma to 100ma 0.022v = 0.09% output ripple v in =5v, io= 100ma 500mvpp short circuit current v in =5v, r l = 0.1 910ma efficiency v in =5v, io= 100ma 62.2% output ripple with optional filter v in =5v, io= 100ma 70mvpp figure 11. voltage inverting converter
ts34063 dc to dc converter controller 7/10 version: b13 design formula table test step up step down voltage inverting ton toff vsat vcc vin vf vout - - + (min) (min) vout vsat vcc vf vout - - + vsat vcc vf vout - + | | ( ton+ toff ) min 1 f min 1 f min 1 f ct 4.0 x 10 C5 ton 4.0 x 10 C5 ton 4.0 x 10 C5 ton ipk(switch) 2iout(max) ? ?? ? ? ?? ? + 1 toff ton 2iout(max) 2iout(max) ? ?? ? ? ?? ? + 1 toff ton rsc ? ?? ? ? ?? ? ) ( 3.0 switch ipk ? ?? ? ? ?? ? ) ( 3.0 switch ipk ? ?? ? ? ?? ? ) ( 3.0 switch ipk l(min) ) ton( ) ipk(switch vsat ) vin( max * min ? ?? ? ? ?? ? - (max) * ) ( (min) ton switch ipk vout vsat vin ? ?? ? ? ?? ? - - (max) * ) ( (min) ton switch ipk vsat vin ? ?? ? ? ?? ? - co ? ?? ? ? ?? ? ) ( * 9 pp vripple ton iout ? ?? ? ? ?? ? + ) ( 8 ) )( ( pp vripple toff ton switch ipk ? ?? ? ? ?? ? ) ( * 9 pp vripple ton iout terms and definitions vsat = saturation voltage of the output switch. vf = forward voltage drop of the rectifier. the following power supply characteristics must be chosen: vin= normal input voltage vout: desied output voltage, |vout| =1.25 (1+r2 / r1) iout : desired output current. fmin : minimum desired output switching frequency at the selected values for vin and io. vripple(p-p): desired peak-to-peak output ripple v oltage. in practice, the calculated capacitor value will need to be increased due to its equivalent series resist ance and board layout. the ripple voltage should be kept to a low value since it will directly affect the line and load regulation.
ts34063 dc to dc converter controller 8/10 version: b13 sop-8 mechanical drawing marking diagram y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code sop-8 dimension dim millimeters inches min max min max. a 4.80 5.00 0.189 0.196 b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.054 0.068 d 0.35 0.49 0.014 0.019 f 0.40 1.25 0.016 0.049 g 1.27bsc 0.05bsc k 0.10 0.25 0.004 0.009 m 0o 7o 0o 7o p 5.80 6.20 0.229 0.244 r 0.25 0.50 0.010 0.019
ts34063 dc to dc converter controller 9/10 version: b13 dip-8 mechanical drawing marking diagram y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code dip-8 dimension dim millimeters inches min max min max a 9.07 9.32 0.357 0.367 b 6.22 6.48 0.245 0.255 c 3.18 4.45 0.125 0.135 d 0.35 0.55 0.019 0.020 g 2.54 (typ) 0.10 (typ) j 0.29 0.31 0.011 0.012 k 3.25 3.35 0.128 0.132 l 7.75 8.00 0.305 0.315 m - 10 o - 10 o
ts34063 dc to dc converter controller 10/10 version: b13 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tscs terms and co nditions of sale for such products, tsc assumes no liability wh atsoever, and disclaims any express or implied warr anty, relating to sale and/or use of tsc products includi ng liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, cop yright, or other intellectual property right. the products shown herein are not designed for use in medical, life-saving, or life-sustaining applica tions. customers using or selling these products for use i n such applications do so at their own risk and agr ee to fully indemnify tsc for any damages resulting from such i mproper use or sale.
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