APL1431BYI-TBL(2008) Ver la hoja de datos (PDF) - Anpec Electronics

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APL1431BYI-TBL
(Rev.:2008)

Adjustable Precision Shunt Regulator

Anpec Electronics 

APL1431

Application Circuits

VIN

RB

R1

VREF

R2

Vo VIN

RB

Vo

R1

C1

VREF

R2

Precision Voltage Reference

Precision High-Current Series Regulator

Notes for Application Circuits:

1) For the series regulator applications, add a compensation capacitor C1 between CATHODE and REF is

strongly recommended to improve the stability of output voltage .

2) Set VO according to the following equation: VO = VREF(1+R1/R2)+lREF xR1

3) Choose the value for RB as follows:

A) The maximum limit for RB should be such that the cathode current (lK) is greater than the minimum

operating current (0.5mA) at VIN(MIN).

B) The minimum limit for R should be such that the cathode current (l ) does not exceed 100mA under all

B

K

load conditions, and the instantaneous turn-on value for l does not exceed 120mA.

K

Copyright © ANPEC Electronics Corp.

4

Rev. A.4 - Mar., 2008

www.anpec.com.tw

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