AP432ASAG-13(2010) 데이터 시트보기 (PDF) - Diodes Incorporated.

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AP432ASAG-13
(Rev.:2010)

ADJUSTABLE PRECISION SHUNT REGULATOR

Diodes Incorporated. 

Application Examples

AP432/AP432A

ADJUSTABLE PRECISION SHUNT REGULATOR

VIN

VIN

R1B

R1A

R

V

IN

RCL

I

OUT

R2A

R2B

LED on when Low Limit<V < High Limit

IN

Low Limit ≈V (1+R1B/R2B)

High

Limit

≈

REF

V

(1+R1A/R2A)

REF

Fig. 4 Voltage

Monitor

VIN

I OUT

V

IN

ON +

OFF

Delay = RC x ln (V

VIN

-V

)

IN REF

Fig. 5 Delay

Timer

VOUT

R1

IOUT

=

V

REF

/

RCL

Fig. 6 Current Limiter or Current

Source

VIN PULSE

R1

VOUT

RS

I OUT = VREF / RS

Fig. 7 Constant-Current

Sink

R2

VOUT = (1 + R1/R2) x VREF

Fig. 8 Higher-Current Shunt

Regulator

R2

LIMIT

(1 + R1/R2) x VREF

Fig. 9 Crow Bar

VIN

R1A

R1B

+

Output ON when

Low Limit <VIN < High Limit

R2A

R2B

VBE

AP432/AP432A

Document number: DS31003 Rev. 16 - 2

Low Limit

High Limit

VREF (1 + R1B/R2B) +VBE

VREF (1 + R1A/R2A)

Fig.10 Over-Voltage / Under-Voltage Protection Circuit

7 of 14

www.diodes.com

June 2010

© Diodes Incorporated

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