TL431K-AB3-R datasheet(6/6 Pages) UTC

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TL431

LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

6 of 6

www.unisonic.com.tw

QW-R103-003,R

TEST CIRCUIT

INPUT

VKA

VREF

IKA

UTC TL431

IREF

VKA=VREF*(1+R1/R2)+IREF*R1

INPUT

VKA

VREF

IKA

UTC TL431

INPUT

VKA

IKA(OFF)

UTC TL431

For VKA=VREF

For VKA≧ VREF

For IKA(OFF)

APPLICATION CIRCUIT

VIN

VoUT

VREF

UTC TL431

Vo=(1+R1/R2)*VREF

VREF

UTC TL431

Vo=(1+R1/R2)*VREF

UTC7805

OUT

COMMON

VREF

UTC TL431

Vo=(1+R1/R2)*VREF

VIN

VoUT

VIN

Shutdown Regulator

Output Control of a Three

Higher-current Shunt Regulator

-Terminal Fixed Regulator

UTC TL431

IO=VREF/RS

VoUT

VIN

VoUT

RCL

RS=VREF/RCL

Constant-current Sink

Current Limiting or Current Source

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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