?2000 imp, inc. 408-432-9100/www.impweb.com 1 imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 p ower m anagement key features 384x series pinout with bicmos technology zero cross-conduction current by design 1mhz operation 65ns maximum current-sense delay 120? maximum start-up current 1.5ma maximum operating current high output current drive ?1.0a, IMP38HC4x ?0.5a, imp38c4x 20v maximum supply voltage 2.5v, 1%, trimmed error amplifier reference trimmed oscillator discharge current pin-for-pin enhanced replacements for micrel mic38c/hc4x and gmt38c4x/hc4x block diagrams bicmos cur bicmos cur r r ent-mode ent-mode pwm contr pwm contr oller oller s s C C 1mhz oper 1mhz oper ation ation C C n n o cr o cr os os s s - - conduction cur conduction cur r r ent ent C C 50ns cur 50ns cur r r ent-sense dela ent-sense dela y y the imp38c4x and IMP38HC4x are fixed frequency, high performance, current-mode pwm controllers that are pin compatible with bipolar 384x devices but feature improvements resulting from imp? bicmos processing and circuit design. notable among the improvements are zero cross-conduction/shoot-through current, reduced start-up and operating current, lower current-sense delay, higher frequency operation, full supply voltage swing at the output and a 1% trimmed voltage reference. imp38c4x and IMP38HC4x output driver stage has zero cross-conduction current. a proprietary output state-machine monitors each output mosfet and guarantees by design zero cross-conduction current. this is an industry first for 384x pwm devices. under-voltage lockout (uvl) performance has been improved. when the power supply voltage is below the startup voltage, internal circuitry puts the output into a low impedance state. the output will sink 20ma and remain below 1.3v, well below the turn-on threshold voltage of the external mosfet. even when v dd drops to zero volts, the out pin will not rise above approximately 1.3v because the output uvlo circuit is + ea out 6 (10) rtct 4 (7) comp 1 (1) v dd v ref 5v reference 7 (12) 8 (14) fb 2 (3) v d (11) + + uvlo + comp pgnd (8) oscillator tq s q r 1v r 2r 2.5v ref ( ) pins are 14-pin devices only 38c/hc_01.eps + gnd 5 agnd (9) 3 (5) isns connection notes imp38c4x, IMP38HC4x (8-pin devices) 50% maximum duty cycle: imp38c44, IMP38HC44, imp38c45, IMP38HC45 96% maximum duty cycle: imp38c42, IMP38HC42, imp38c43, IMP38HC43
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 2 408-432-9100/www.impweb.com ?2000 imp, inc. ! s pin descriptions pin configuration imp38c4x IMP38HC4x 1 comp 2 fb 3 isns 4 rt/ct v ref v dd out gnd 8 7 6 5 38c/hc_02.eps so/microso/dip so/dip imp38c4x IMP38HC4x 1 comp 2 nc 3 fb 4 nc v ref nc v dd v d 14 13 12 11 5 isns out 10 6 nc agnd 9 7 rt/ct pgnd 8 38c/hc_03.eps r e b m u n n i p e m a nn o i t c n u f e g a k c a p n i p - 8e g a k c a p n i p - 4 1 11 p m o c . r o t a r a p m o c m w p e h t o t t u p n i d n a r e i f i l p m a r o r r e e h t f o t u p t u o 23b f. r e i f i l p m a r o r r e e h t f o t u p n i g n i t r e v n i 35 s n s i. v 1 o t d e t i m i l y l l a n r e t n i s i t i . t u p n i r o t a r a p m o c e s n e s t n e r r u c 47 t c / t r o t d e t c e n n o c s i t r r o t s i s e r . n o i t c e n n o c t n e n o p m o c g n i m i t c r r o t a l l i c s o v f e r d n a t r f o s e u l a v t n e r e f f i d . d n u o r g o t d e t c e n n o c s i t c r o t i c a p a c d n a . e l c y c y t u d m u m i x a m e h t e n i m r e t e d t c 58 d n g p / d n g r e w o p d n a s e c i v e d d e g a k c a p n i p - 8 r o f d n u o r g g o l a n a d n a r e w o p d e n i b m o c . e g a k c a p n i p - 4 1 r o f d n u o r g 60 1t u o n e h w w o l d l e h y l e v i t c a s i n i p t u o . t u p t u o r e v i r d e l o p - m e t o t , r e w o p - h g i h v c c . d l o h s e r h t o l v u e h t w o l e b s i 72 1v d d . t u p n i e g a t l o v y l p p u s 84 1v f e r . t u p t u o e g a t l o v e c n e r e f e r - v 5 9d n g a. e g a k c a p n i p - 4 1 r o f n o i t c e n n o c d n u o r g g o l a n a 1 1v d . e g a k c a p n i p - 4 1 r o f e g a t l o v y l p p u s r e v i r d t u p t u o 3 1 , 6 , 4 , 2c n. n o i t c e n n o c l a n r e t n i o n s p e . 1 0 t _ c h - c 8 3 powered through the out pin. leakage current from the external power mosfets will not force the pwm output to rise and turn the external mosfets on. current-sense propagation delay time is 35ns typical, 65ns maxi- mum, representing an up to 75 percent reduction over other 38xx implementations. output stage drive is 0.5a for imp38c4x devices. the high-drive IMP38HC4x family is rated at 1.0a peak current drive. like conventional 384x controllers, the imp38c4x and IMP38HC4x controllers use the current-mode architecture for superior load regulation, pulse-by-pulse current limiting and out- put mosfet protection. all versions operate up to 20 volts. for maximum application flexibility, start-up voltage ranges from 14.5v to 8.4v. start-up current has been reduced to 120 a maxi- mum and operating current has been reduced to 1.5ma maximum. the imp38c4x/IMP38HC4x are available in 8-pin and 14-pin dip and so packages as well as the 8-pin microso package. the 14- pin devices provide separate pins for the controller power supply and the output driver supply. this configuration maximizes application flexibility and performance. the 14-pin package can also dissipate more power. devices in the compact 8-pin packages do not have separate output drive supply connections. the imp38c4x and IMP38HC4x families operate over the 40 c to +85 c temperature range.
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 ?2000 imp, inc. pwm controllers 3 ordering information g n i r e d r o p m i r e b m u n t r a pe g a k c a p g n i t a r e p o e r u t a r e p m e t e g n a r p u t r a t s e g a t l o v m u m i n i m g n i t a r e p o e g a t l o v m u m i x a m e l c y c y t u d e c n e r e f e r e g a t l o v t u p t u o k a e p e v i r d t n e r r u c a p e 2 4 c 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 5 . 0 d p e 2 4 c 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 5 . 0 a s e 2 4 c 8 3 p m io s - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 5 . 0 d s e 2 4 c 8 3 p m io s - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 5 . 0 a m e 2 4 c 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 5 . 0 d / 2 4 c 8 3 p m ie i d a p e 3 4 c 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 5 . 0 d p e 3 4 c 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 5 . 0 a s e 3 4 c 8 3 p m io s - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 5 . 0 d s e 3 4 c 8 3 p m io s - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 5 . 0 a m e 3 4 c 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 5 . 0 d / 3 4 c 8 3 p m ie i d a p e 4 4 c 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 5 . 0 d p e 4 4 c 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 5 . 0 a s e 4 4 c 8 3 p m io s - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 5 . 0 d s e 4 4 c 8 3 p m io s - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 5 . 0 a m e 4 4 c 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 5 . 0 d / 4 4 c 8 3 p m ie i d a p e 5 4 c 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 5 . 0 d p e 5 4 c 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 5 . 0 a s e 5 4 c 8 3 p m io s - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 5 . 0 d s e 5 4 c 8 3 p m io s - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 5 . 0 a m e 5 4 c 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 5 . 0 d / 5 4 c 8 3 p m ie i d a p e 2 4 c h 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 0 . 1 d p e 2 4 c h 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 0 . 1 a s e 2 4 c h 8 3 p m io s - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 0 . 1 d s e 2 4 c h 8 3 p m io s - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 0 . 1 a m e 2 4 c h 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 6 9v 5 . 2a 0 . 1 d / 2 4 c h 8 3 p m ie i d a p e 3 4 c h 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 0 . 1 d p e 3 4 c h 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 0 . 1 a s e 3 4 c h 8 3 p m io s - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 0 . 1 d s e 3 4 c h 8 3 p m io s - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 0 . 1 a m e 3 4 c h 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 6 9v 5 . 2a 0 . 1 d / 3 4 c h 8 3 p m ie i d a p e 4 4 c h 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 0 . 1 d p e 4 4 c h 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 0 . 1 a s e 4 4 c h 8 3 p m io s - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 0 . 1 d s e 4 4 c h 8 3 p m io s - 4 1 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 0 . 1 a m e 4 4 c h 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 5 . 4 1v 0 . 9% 0 5v 5 . 2a 0 . 1 d / 4 4 c h 8 3 p m ie i d a p e 5 4 c h 8 3 p m ip i d c i t s a l p - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 0 . 1 d p e 5 4 c h 8 3 p m ip i d c i t s a l p - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 0 . 1 a s e 5 4 c h 8 3 p m io s - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 0 . 1 d s e 5 4 c h 8 3 p m io s - 4 1 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 0 . 1 a m e 5 4 c h 8 3 p m io s o r c i m - 8 0 4 5 8 o t c cv 4 . 8v 6 . 7% 0 5v 5 . 2a 0 . 1 d / 5 4 c h 8 3 p m ie i d s p e . 2 0 t _ c h / c 8 3 for so and microso packages, append ?t?to the ordering part number for tape and reel packaging.
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 4 408-432-9100/www.impweb.com ?2000 imp, inc. ! s absolute maximum ratings v cc supply voltage . . . . . . . . . . . . . . . . . . . . . . 20v v cc supply current . . . . . . . . . . . . . . . . . . . . . . 30ma i out current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0a current-sense and feedback inputs . . . . . . . . 0.3v to 5.5v operation junction temperature . . . . . . . . . . . +150 c storage temperature . . . . . . . . . . . . . . . . . . . . . 65 c to +150 c lead soldering temperature (10 seconds) . . . +300 c parameter symbol conditions min typ max units reference output voltage v ref t a = +25 c, i o = 1ma 4.90 5.00 5.10 v line regulation 12v v cc 18v, i out = 5 a220mv load regulation 1ma i o 20ma 1 25 mv temperature stability tc ref note 1 0.2 mv/ c total reference variation line, load, temperature, note 1 4.82 5.18 v output noise voltage v n 10hz f 10khz, t a = +25 c, note 1 50 v long term stability t a = 125 c, 1000 hours, note 1 tbd mv output short circuit i sc 30 40 180 ma oscillator section initial accuracy f init t a = 25 c, note 5 49 52 55 khz voltage stability 12v v cc 18v 0.2 1.0 % temperature stability tc osc note 1 0.04 %/ c discharge current v rt/ct = 2v 7.2 8.4 12.0 ma amplitude peak-to-peak v osc, p-p v rt/ct peak-to-peak 1.1 1.7 2.3 v error amplifier section input voltage v in v comp = 2.5v 2.45 2.50 2.55 v input bias current i b v fb = 4.5v 11 a open loop gain a vol 2v v o 4v, note 1 65 90 db unity gain bandwidth ugbw note1 0.7 1.0 mhz power supply rejection ratio psrr v start v cc v ccmax 60 db output sink current i ol v fb = 2.7v, vcomp = 1.1v 2 6 ma output source current i oh v fb = 2.3v, vcomp = 5.0v 0.5 1.0 ma v out high v oh v fb = 2.3v, r l = 15k ? to ground 4.5 4.6 5.0 v v out low v ol v fb = 2.7v, r l = 15k ? to v ref 0.30 0.50 v unless otherwise noted, v cc = 15v, rt = 10k ? and ct = 3.3nf. specifications are over the 40? to +85? ambient temperature range. bold/ blue specifications indicate enhanced performance features. electrical characteristics package thermal resistance 8-pin plastic dip ( ja ) . . . . . . . . . . . . . . . . . 125 c/w 8-pin microso ( ja ) . . . . . . . . . . . . . . . . . . . 250 c/w 8-pin so ( ja ) . . . . . . . . . . . . . . . . . . . . . . . . 170 c/w 14-pin plastic dip ( ja ) . . . . . . . . . . . . . . . . 90 c/w 14-pin so ( ja ) . . . . . . . . . . . . . . . . . . . . . . . 145 c/w note: all voltages are referenced to gnd. these are stress ratings only and functional operation is not implied. exposure to absolute maximum ratings for prolonged time periods may affect device reliability.
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 ?2000 imp, inc. pwm controllers 5 electrical characteristics parameter symbol conditions min typ max units current sense gain a vol notes 1, 2 and 3 2.90 3.00 3.10 v/v over current protection threshold vcomp = max, note 2 0.9 0.98 1.1 v power supply rejection ratio psrr v start v cc 18v 70 db input bias current i b 0.1 2.0 a delay to output t pd v fb = 0v, isns 0v to 2v, c l = 1nf 50 65 ns output imp38c4x on resistance, high r ds (on) i source = 0.2a 20 ? on resistance, low i sink = 0.2a 11 IMP38HC4x on resistance, high r ds (on) i source = 0.2a 10 ? on resistance, low i sink = 0.2a 5.5 peak drive current hc devices 1.0 a h devices 0.5 imp38c4x rise time t r t a = 25 c, c l = 1nf 40 70 ns imp38c4x fall time t f t a = 25 c, c l = 1nf 30 50 ns IMP38HC4x rise time t r t a = 25 c, c l = 1nf 20 50 ns IMP38HC4x fall time t f t a = 25 c, c l = 1nf 15 40 ns shoot-through current 0ma undervoltage lockout start threshold imp38c42/4, IMP38HC42/4 13.5 14.5 15.5 v imp38c43/5, IMP38HC43/5 7.8 8.4 9.0 minimum operating voltage imp38c42/4, IMP38HC42/4 8 9 10 v imp38c43/5, IMP38HC43/5 7.0 7.6 8.2 pulse width modulator maximum duty cycle imp38c42/3, IMP38HC42/3, 94 96 % maximum duty cycle imp38c44/5, IMP38HC44/5 48 50 % minimum duty cycle 0% supply current start-up current v cc = 13v for imp38c42/44, IMP38HC42/44 95 120 a v cc = 7.5v for imp38c43/45, IMP38HC43/45 operating current i cc v fb = v is = 0 0.5 1.5 ma unless otherwise noted, v cc = 15v, r t = 10k ? and c t = 3.3nf. specifications are over the 40? to +85? ambient temperature range. bold/ blue specifications indicate enhanced performance features. note 1. guaranteed by design. not 100% tested in production. note 2. measured at trip point of v fb = 0v. note 3. gain is defined as: s d l o h s e r h t o l v u e l c y c y t u d v 4 . 8 t a p u - t r a t s v 6 . 7 = m u m i n i m g n i t a r e p o v 5 . 4 1 t a p u - t r a t s v 0 . 9 = m u m i n i m g n i t a r e p o % 6 9 o t % 03 4 c h / 3 4 c 8 3 p m i2 4 c h / 2 4 c 8 3 p m i % 0 5 o t % 05 4 c h / 5 4 c 8 3 p m i4 4 c h / 4 4 c 8 3 p m i s p e . 3 0 t _ c h / c 8 3 table 1. startup and operating voltage selection guide a v v , 0 v 0.8v comp cs cs =? ? ? note 4. adjust v cc above the start threshold before setting at 15v. note 5. output frequency equals the oscillator frequency for imp38c42/3 and IMP38HC42/3 devices. output frequency equals one-half the oscillator frequency for imp38c44/5 and IMP38HC44/5 devices.
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 6 408-432-9100/www.impweb.com ?2000 imp, inc. ! s transient protection good high-frequency layout practices should be followed. avoid long printed-circuit traces and component leads. locate oscillator and compensation components near the ic. avoid capacitive and inductive coupling of the switching waveform into the high-impedance inputs of the error amplifier, oscillator, and current-sense amplifier. v ref and v cc stability will be aided by using high-frequency decoupling capacitors. undervoltage lockout several different thresholds are available. under-voltage lockout (uvl) performance has been improved. when the power supply voltage is below the startup voltage, internal circuitry puts the output into a low impedance state and sets the output to zero. the output will sink up to 20ma in this controlled state and remain below 1.3v, well below the turn-on threshold voltage of the external mosfet. with the imp38c/hc4x output stage design, leakage current from the external power mosfets will not force the pwm output to rise and turn the external mosfet on. even when v dd drops to zero volts, the out pin will not rise above approximately 1.3v because the uvlo circuit is powered through the out pin. the imp output stage performance in uvl mode, while sinking 20ma, is shown in figure 2 . figure 2. output stage performance in uvl mode 0 output (v) v dd (v) 2.0 1.5 1.0 0.5 0 v out while sinking 20ma 12345 7 69 8 38c/hc_05b.eps imp38c/hc4x s d l o h s e r h t t u o k c o l e g a t l o v r e d n u v 4 . 8 t a p u - t r a t s v 6 . 7 = m u m i n i m g n i t a r e p o v 5 . 4 1 t a p u - t r a t s v 0 . 9 = m u m i n i m g n i t a r e p o 3 4 c h / 3 4 c 8 3 p m i2 4 c h / 2 4 c 8 3 p m i 5 4 c h / 5 4 c 8 3 p m i4 4 c h / 4 4 c 8 3 p m i s p e . 4 0 t _ c h / c 8 3 the imp38c and imp38hc devices are compatible with generic 384x pwm devices. the following discussion highlights the dif- ferences and advantages of the imp ??and ?c?designs. start-up current imp? bicmos process allows for substantial reduction in the start-up current. typical start-up current is 95 a, with a maxi- mum limit of 120 a. low start-up current allows high resistance, lower-wattage, start-up resistors to supply controller start-up power. operating current operating current has been reduced to 1.5ma maximum. compared to the 11ma needed for a typical bipolar controller and 6ma for competitive bicmos controllers, imp's low operating current allows the controller to run cooler and with better effi- ciency. in addition, the v cc hold-up capacitance (used during start-up) can be reduced. output driver the IMP38HC4x/38c4x cmos output stage drives external power mosfets to the full supply voltage. low on-resistance and high peak current drive combine to give greater than 1000pf gate capacitance drive capability. rise and fall time requirements may dictate the appropriate value of output capacitance. within the restrictions of output capacity and controller power dissipa- tion, switching frequencies can exceed 1mhz. the cmos output stage ?reak-before-make?action is guaran- teed by design and insures that no cross-conduction current will flow. this minimizes heat dissipation, increases efficiency and enhances reliability. oscillator operation two external components, rt and ct, set the switching frequency. with v cc = 14v, rt = 10k and ct = 3.3nf, nominal switching frequency is 50khz. figure 1. oscillator component selection application information frequency hz 1.73 rt ct f [] = [] [] ? imp38c4x IMP38HC4x v ref rt/ct gnd 38c/hc_07.eps rt ct
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 ?2000 imp, inc. pwm controllers 7 application information out 6 (10) v d (11) + + uvlo + comp pgnd (8) tq s q r uvl protection 1v r 2r ( ) pins are 14-pin devices only 38c/hc_06.eps gnd 5 agnd (9) 3 (5) isns connection notes imp38c4x, IMP38HC4x (8-pin devices) 50% maximum duty cycle: imp38c44, IMP38HC44, imp38c45, IMP38HC45 96% maximum duty cycle: imp38c42, IMP38HC42, imp38c43, IMP38HC43 figure 3. uvl protection circuit
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 8 408-432-9100/www.impweb.com ?2000 imp, inc. ! s e e1 d1 d ea eb c 0 15 a e b2 b a2 l a1 plastic dip (8-pin)a.eps plastic dip (8-pin) f 8 c h e e d b a1 a so (8-pin).eps so (8-pin) v k fvvf fvffl v u cm=4fv s e h c n is r e t e m i l l i m n i mx a mn i mx a m * ) n i p - 8 ( o s o r c i m a 3 3 4 0 . 0 0 1 . 1 1 a0 2 0 0 . 09 5 0 0 . 00 5 0 . 05 1 . 0 2 a5 9 2 0 . 04 7 3 0 . 05 7 . 05 9 . 0 b8 9 0 0 . 07 5 1 0 . 05 2 . 00 4 . 0 c1 5 0 0 . 01 9 0 0 . 03 1 . 03 2 . 0 d2 4 1 1 . 00 2 2 1 . 00 9 . 20 1 . 3 ec s b 6 5 2 0 . 0c s b 5 6 . 0 ec s b 3 9 1 . 0c s b 0 9 . 4 1 e2 4 1 1 . 00 2 2 1 . 00 9 . 20 1 . 3 l7 5 1 0 . 06 7 2 0 . 00 4 . 00 7 . 0 a 0 6 0 6 * * ) n i p - 8 ( o s a3 5 0 . 09 6 0 . 05 3 . 15 7 . 1 1 a4 0 0 . 00 1 0 . 00 1 . 05 2 . 0 b3 1 0 . 00 2 0 . 03 3 . 01 5 . 0 c7 0 0 . 00 1 0 . 09 1 . 05 2 . 0 e0 5 0 . 07 2 . 1 e0 5 1 . 07 5 1 . 00 8 . 30 0 . 4 h8 2 2 . 04 4 2 . 00 8 . 50 2 . 6 l6 1 0 . 00 5 0 . 00 4 . 07 2 . 1 d9 8 1 . 07 9 1 . 00 8 . 40 0 . 2 * * * ) n i p - 8 ( p i d c i t s a l p a 0 1 2 . 0 3 3 . 5 1 a5 1 0 . 0 8 3 . 0 2 a5 1 1 . 05 9 1 . 02 9 . 25 9 . 4 b4 1 0 . 02 2 0 . 06 3 . 06 5 . 0 2 b5 4 0 . 00 7 0 . 04 1 . 18 7 . 1 3 b0 3 0 . 05 4 0 . 00 8 . 04 1 . 1 d5 5 3 . 00 0 4 . 02 0 . 96 1 . 0 1 1 d5 0 0 . 0 3 1 . 0 e0 0 3 . 05 2 3 . 02 6 . 76 2 . 8 1 e0 4 2 . 00 8 2 . 00 1 . 61 1 . 7 e0 0 1 . 0 4 5 . 2 a e0 0 3 . 0 2 6 . 7 b e 0 3 4 . 0 2 9 . 0 1 c e 0 6 0 . 0 l5 1 1 . 00 5 1 . 02 9 . 21 8 . 3 a a 7 8 1 - o m g n i w a r d c e d e j * a a 2 1 1 - s m g n i w a r d c e d e j * * a b 1 0 0 - s m g n i w a r d c e d e j * * * 3 t a . 5 0 t _ c h / c 8 3 so (8-pin) so (8-pin) package dimensions
imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5 ?2000 imp, inc. pwm controllers 9 package dimensions d1 d ea c 0 15 a e1 e e1 b1 b l a1 plastic dip (14-pin).eps plastic dip (14-pin) so (14-pin) h e eb d a1 a so (16-pin).eps l 0 8 c s e h c n is r e t e m i l l i m n i mx a mn i mx a m * ) n i p - 4 1 ( o s a6 2 9 0 . 03 4 0 1 . 05 3 . 25 6 . 2 1 a0 4 0 0 . 08 1 1 . 00 1 . 00 3 . 0 b3 1 0 . 00 2 0 . 03 3 . 01 5 . 0 c1 9 0 0 . 05 2 1 0 . 03 2 . 02 3 . 0 d5 6 4 3 . 02 2 6 3 . 00 8 . 80 2 . 9 e4 1 2 . 02 9 9 2 . 00 4 . 70 6 . 7 ec s b 0 5 0 . 0c s b 7 2 . 1 h4 9 3 . 09 1 4 . 00 0 . 0 15 6 . 0 1 l6 1 0 . 00 5 0 . 00 4 . 07 2 . 1 * * ) n i p - 4 1 ( p i d c i t s a l p a5 5 1 . 00 0 2 . 04 9 . 38 0 . 5 1 a0 2 . 00 5 . 01 5 . 07 2 . 1 b4 1 0 . 00 2 0 . 06 5 3 . 08 0 5 . 0 1 b0 5 0 . 05 6 0 . 07 2 . 15 6 . 1 c8 0 0 . 02 1 0 . 04 0 2 . 04 0 3 . 0 d5 4 7 . 00 7 7 . 03 9 . 8 15 5 . 9 1 e0 0 3 . 05 2 3 . 02 6 . 75 2 . 8 1 e0 4 2 . 00 6 2 . 00 1 . 60 6 . 6 1 ep y t 0 0 1 . 0p y t 4 5 . 2 a ep y t 0 0 3 . 0p y t 2 6 . 7 l0 0 1 . 0 8 1 . 31 8 . 3 f a 3 1 0 - s m g n i w a r d c e d e j * b a - a a 1 0 0 - o m g n i w a r d c e d e j * * 3 t a . 6 0 t _ c h / c 8 3
imp, inc. corporate headquarters 2830 n. first street san jose, ca 95134-2071 tel: 408-432-9100 fax: 408-434-0335 e-mail: info@impinc.com http://www.impweb.com the imp logo is a registered trademark of imp, inc. all other company and product names are trademarks of their respective owners. ? 2000 imp, inc. printed in usa publication #: 3001 revision: d issue date: 08/30/00 type: preliminary imp38c/hc/42/3/4/5 imp38c/hc/42/3/4/5
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