2001. 4. 16 1/7 semiconductor technical data kia34063a/af bipolar linear integrated circuit revision no : 2 dc/dc converter controller the kia34063a/af series is a monolithic control circuit containing the primary functions required for dc-to-dc converters. these devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit. driver and high current output switch. this series was specifically designed to be incorporated in step-down and step-up and voltage-inverting applications with a minimum number of external components. features h operation from 3.0v to 40v input. h low standby current. h current limiting. h output switch current to 1.5a. h output voltage adjustable. h frequency operation to 100khz. h precision 2% reference. 85 14 q dip-8 a b d p d h l w t g dim millimeters a b d t p d g h l 3.8 0.3 0 - 15 1.52 0.1 w 9.6 0.2 6.45 0.2 0.46 0.1 0.50 min 3.3 0.3 2.54 0.25+0.1/-0.05 7.62 q + _ + _ + _ + _ + _ + _ flp-8 0.20+0.1/-0.05 p t 1.27 u 0.1 max millimeters 0.4 0.1 0.15+0.1/-0.05 4.85 0.2 b2 g h l d a b1 dim 6.02 0.3 1.63 0.2 0.65 0.2 3.94 0.2 + _ + _ + _ + _ + _ + _ g h b1 b2 1 4 5 8 a p d l t u 1 2 3 4 8 7 6 5 switch collector switch emitter timing capacitor gnd comparator inverting input v cc i pk sense driver collector
2001. 4. 16 2/7 kia34063a/af revision no : 2 q2 q1 100 sq r i oscillator c pk t comparator + - 1.25v reference regulator 8 7 6 5 1 2 3 4 switch collecto r emitter switch capacitor timing gnd comparator v sense i driver collector cc pk inverting input block diagram maximum ratings (ta=25 ? ) characteristic symbol rating unit power supply voltage v cc 40 v comparator input voltage range v ir -30 q 40 v switch collector voltage v c(switch) 40 v switch emitter voltage (v pin1 =40v) v e(switch) 40 v switch collector to emitter voltage v ce(switch) 40 v driver collector voltage v c(driver) 40 v driver collector current (note 1) i c(driver) 100 ma switch current i sw 1.5 a power dissipation kia34063a p d 500 mw KIA34063AF 320 operating temperature t opr -30 q 75 ? storage temperature t stg -65 q 150 ? note 1) maximum package power dissipation limits must be observed.
2001. 4. 16 3/7 kia34063a/af revision no : 2 characteristic symbol test condition min. typ. max. unit supply current i cc v cc =5.0 q 40v, c t =1.0nf, pin 7=v cc , pin 2=gnd, v pin5 y v th , remaining pins open - - 4.0 ma characteristic symbol test condition min. typ. max. unit threshold voltage v th1 ta=25 ? 1.225 1.25 1.275 v threshold voltage v th2 ta=t low q t high 1.21 - 1.29 v threshold voltage line regulation reg line v cc =3.0 q 40v - 1.4 5.0 mv input bias current i ib v in =0 - -20 -400 na characteristic symbol test condition min. typ. max. unit frequency f osc v pin5 =0v, c t =1.0nf 24 33 42 khz charge current i chg v cc =5.0 q 40v 24 35 42 a discharge current i dischg v cc =5.0 q 40v 140 220 260 a discharge to charge current ratio i dischg /i chg pin 7 q v cc 5.2 6.5 7.5 - current limit sense voltage v ipk(sense) i dischg =i chg 250 300 350 mv electrical characteristics (v cc =5.0v, ta=25 ? , unless otherwise specified) oscillator section output switch section (note 2) comparator section total device characteristic symbol test condition min. typ. max. unit saturation voltage, darlington connection v ce(sat1) i sw =1.0a, pins 1, 8 connection - 1.0 1.3 v saturation voltage (note 3) v ce(sat2) i sw =1.0a, forced e = !4 20 r pin8 =82 ? to v cc - 0.45 0.7 v dc current gain h fe i sw =1.0a, v ce =5.0a, 50 75 - - collector off-state current i c(off) v ce =40v - 0.01 100 a note) 2. low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. 3. if the output switch is driven into hard saturation (non-darlington configuration) at low switch currents ( ? 300ma) and high driver currents ( ? 30ma), it may take up to 2.0 s for it to come out of saturation. this condition will shorten the off time at frequencies ? 30khz, and is magnified at high temperatures. this condition does not occur with a darlington configuration, since the output switch cannot saturate. if a non-darlington configuration is used, the following output drive condition is recommended ; i c output forced e of output switch : ? 10 i c driver-7.0ma * * the 100 ? resistor in the emitter of the driver device requires about 7.0ma before the output switch conducts.
2001. 4. 16 4/7 kia34063a/af revision no : 2 q2 q1 100 sq r i osc c pk t comp. + - 1.25v ref reg 8 7 6 5 1 2 3 4 ( ( ( l 170 h 1n5819 c 330 2.2k r1 47k r2 v r 0.22 12v 100 v 1500 pf 28v/175ma v in sc 180 + + o out c t cc 1.0 h ( 100 v out + optional filter application circuit (1) step-up converter test conditions results line regulation v in =8.0v to 16v, i o =175ma 30mv= ? 0.05% load regulation v in =12v, i o =75ma to 175ma 10mv= ? 0.017% output ripple v in =12v, i o =175ma 400 mvpp efficiency v in =12v, i o =175ma 87.7% output ripple with optional filter v in =12v, i o =175ma 40 mvpp
2001. 4. 16 5/7 kia34063a/af revision no : 2 q2 q1 100 sq r i osc c pk t comp. + - 1.25v ref reg 8 7 6 5 1 2 3 4 ( ( ( c 470 1.2k r1 3.6k r2 v r 0.33 25v 100 v 470 pf 5.0v/500ma v in sc + + o out c t cc 1.0 h ( 100 v out + optional filter 220 h l 1n5819 (2) step-down converter test conditions results line regulation v in =15v to 25v, i o =500ma 12mv= ? 0.12% load regulation v in =25v, i o =50ma to 500ma 3.0mv= ? 0.03% output ripple v in =25v, i o =500ma 120 mvpp short circuit current v in =25v, r l =0.1 ? 1.1a efficiency v in =25v, i o =500ma 83.7% output ripple with optional filter v in =25v, i o =500ma 40 mvpp
2001. 4. 16 6/7 kia34063a/af revision no : 2 q2 q1 100 sq r i osc c pk t comp. + - 1.25v ref reg 8 7 6 5 1 2 3 4 ( ( ( c 8.2k r2 953 r1 v r 0.24 4.5v to 6.0v 100 v 1500 pf -12v/100ma v in sc + + o out cc 1.0 h ( 100 v out + optional filter 1n5819 88 h l + 1000 f (2) voltage inverting converter test conditions results line regulation v in =4.5v to 6.0v, i o =100ma 3.0mv= ? 0.012% load regulation v in =5.0v, i o =10ma to 100ma 0.022v= ? 0.09% output ripple v in =5.0v, i o =100ma 500 mvpp short circuit current v in =5.0v, r l =0.1 ? 910ma efficiency v in =5.0v, i o =100ma 62.2% output ripple with optional filter v in =5.0v, i o =100ma 70 mvpp
2001. 4. 16 7/7 kia34063a/af revision no : 2 v (v) 200 ipk(sense) -55 ambient temperature ta ( c) ipk(sense) v - ta oscillator timing capacitor c (pf) t ( s) on-off t , t - c on 10 s/div oscillator voltage v (v) osc timing capacitor waveform v =5.0v pin7=v cc v =5.0v pins3,5=gnd emitter current i (a) 1.0 saturation voltage v (v) 0 ce(sat) e v - i ce(sat) e pins1,7,8=v cc cc ta=25 c saturation voltage v (v) collector current i (a) 0 0 ce(sat) c v - i ce(sat) c -25 0 25 50 75 100 cc i =i v =5.0v supply voltage v (v) supply current i (ma) 0 0 cc c =1.0nf pin7=v pin2=gnd i - v cc t 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 (see note 3) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 (see note 3) pins2,3,5=gnd pin7=v ta=25 c v =5.0v cc cc darlington connection forced =20 125 240 280 320 360 400 220 260 300 340 380 chg dischg current limit sense voltage cc cc 510152025303540 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 cc 10 1 10 t off t output switch on-off time 200mv/div cc pin2=gnd pins1,5,8=open c =1.0nf ta=25 c t pin5=gnd v =5.0v pin7=v cc cc ta=25 c t on t off 10 10 10 23 4 5 10 10 2 3
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