unisonic technologies co., ltd tl432 preliminary linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2009 unisonic technologies co., ltd qw-r103-009.ma 1.25v precision adjustable shunt reference regulators ? description the utc tl432 is a three-terminal adjustable shunt regulator highly accurate 1.25v band gap reference with 0.5%, 1% tolerance. the device offers thermal stability, wide operating current (50ma) and an extended temperature range of 0 to 105 c for operation in power supply applications. the utc tl432 offers a wide operating voltage range of up to 12v and is an excellent choice for voltage reference requirements in an isol ated feedback circuit for 3.0v ~ 3.3v switching mode power supplies. the tight tolerance guarantees a lower design cost for the power supply manufacturer by virtually eliminating the need for an extr a power supply manufacturing process of the power supply. ? features *temperature-compensated:50ppm/c *internal amplifier with 50ma capability *nominal temperature range extended to 105c *low frequency dynamic output impedance:<150 ? *low output noise ? ordering information ordering number pin assignment normal lead free halogen free 12345678 package packing tl432-ab3-r TL432L-AB3-R tl432g-ab3-r r a k - - - - - sot-89 tape reel tl432-ae3-r tl432l-ae3-r tl432g-ae3-r k r a - - - - - sot-23 tape reel tl432-af5-r tl432l-af5-r tl432g-af5-r x x k r a - - - sot-25 tape reel tl432-t92-b tl432l-t92-b tl432g-t92-b r a k - - - - - to-92 tape box tl432-t92-k tl432l-t92-k tl432g-t92-k r a k - - - - - to-92 bulk tl432-s08-r tl432l-s08-r tl432g-s08-r kaaxxaar sop-8 t ape reel note: pin code: c: cathode a: anode r: reference x: no connection
tl432 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r103-009.ma ? marking information package marking sot-23 432 1 2 3 l: lead free g: halogen free sot-25 5 4 3 432 21 l: lead free g: halogen free
tl432 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r103-009.ma ? block diagram 1.25v cathode(k) anode(a) reference(r) + - + -
tl432 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r103-009.ma ? absolute maximum ratings parameter symbol value unit cathode-anode reverse breakdown v ka 15 v anode-cathode forward current i ak 1 a operating cathode current i ka 50 ma reference input current i ref 1 ma junction temperature t j +125 c operating temperature t opr -20 ~ +85 c storage temperature t stg -40 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? recommended operating conditions parameter symbol min typ max unit cathode voltage v ka v ref 15 v cathode current i k 5 10 ma ? thermal data parameter symbol rating unit sot-23/sot-25 350 c/w to-92 100 c/w sop-8 150 c/w junction to ambient sot-89 ja 220 c/w ? electrical characteristics (t j =25 c, v ka =v ref, i k =10ma, unless otherwise specified.) parameter symbol test conditions min typ max unit 0.5% 1.243 1.250 1.256 v refer input voltage 1% v ref i k =10ma, v k =v ref 1.237 1.250 1.263 v line regulation v ref v k =1.25 ~ 15v 10 26 mv load regulation v ref i k =5 ~ 50ma 6 15 mv temperature deviation v ref 0 < t j < 105c 2 6 mv reference input current i ref 3 6 a reference input current temperature coefficient i ref 0 < t j < 105c 0.3 0.6 a minimum cathode current for regulation i k(min) 0.6 1 ma off state leakage i ka(off) v ref =0v,v ka =15v 500 na 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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