unisonic technologies co., ltd uc34163 linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2011 unisonic technologies co., ltd qw-r103-037.ca dc to dc converter controller ? description the utc uc34163 is a monolithic regulator subsystem, intended for use as dc-to-dc converter. th is device contains a temperature compensated reference, 2 comparators, a duty-cycle control oscillator, driver and high current output switch. ? features * maximum input voltage is 35v. * low standby current. * output switch current to 1.5a. * frequency of operation from 100hz ~ 100khz. * step-down switch regulators. dip-8 sop-8 ? ordering information ordering number lead free halogen free package packing uc34163l-d08-t uc34163g-d08-t dip-8 tube uc34163l-s08-r UC34163G-S08-R sop-8 tape reel uc34163l-s08-t uc34163g-s08-t sop-8 tube
uc34163 linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r103-037.ca ? pin configuration ? block diagram 1 2 3 45 6 7 8 swc swe rs comp v cc l sense gnd adj ct oscill ator q 1.25v v ref 300mv v ref + - + - v i switch emitter switch collector i peak sense timing capacitor vcc gnd comparator inverting input current comparator voltage t cap
uc34163 linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r103-037.ca ? absolute maximum ratings (ta=25 c) parameter symbol ratings unit supply voltage vcc 35 v comparator input voltage range v in(comp) -0.3 ~ +35 v switch collector voltage v c(sw) 35 v switch emitter voltage v e(sw) 35 v switch collector to emitter voltage v ce(sw) 35 v output switch current i out 1.5 a dip-8 1250 mw power dissipation (ta=25 c) sop-8 p d 625 mw operating junction temperature t j +125 operating temperature t opr -20 ~ +85 storage temperature t stg -40 ~ +150 note: 1.absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. absolute maximum ratings are stress ratings on ly and functional device operation is not implied. 2.the device is guaranteed to meet performance specification within 0 ~+70 operating temperature range and assured by design from -20 ~+85 , characteristic and correlation with static process control. ? thermal data parameter symbol ratings unit dip-8 100 junction to case sop-8 jc 160 /w ? electrical characteristics (ta=25 , v cc = 5.0v, ta=0 ~ 70 , unless otherwise specified.) parameter symbol test conditions min typ max unit oscillator frequency (c t =470pf, ta=25 c) f osc 25 35 45 khz charging current i chg v cc =5 ~ 35v, ta=25 20 30 40 a discharging current i dischg v cc =5 ~ 35v, ta=25 140 200 260 a oscillator amplitude v osc ta=25 c 0.8 v discharge to charge current ratio k ta=25 5.2 8.0 output switch saturation voltage 1(note1) v ce(sat) i sw =1.0a 1.4 v collector off state current (note1) i c(off) v ce =35.0v,ta=25 c 0.01 100 a adj current limit sense voltage v sense 280 300 360 mv comparator threshold voltage 1 v thd1 1.21 1.24 1.29 v threshold voltage 2 v thd2 280 300 360 mv threshold voltage line regulation v thd1 v cc =5 ~ 35v 2.0 5.0 mv input bias current i bias v in =0v 50 400 na total device supply current i cc v cc =5 ~ 35v, c t =470pf v 6 =gnd, v 7 >v thd1 2.5 4.0 ma note1: output switch tests are performed under pulsed conditions to minimize power dissipation.
uc34163 linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r103-037.ca ? typical application circuit utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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