A8425 Просмотр технического описания (PDF) - Allegro MicroSystems

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A8425

High Current Photoflash Capacitor Charger with IGBT Driver for Two Li+ Batteries

Allegro MicroSystems 

A8425

High Current Photoflash Capacitor Charger

with IGBT Driver for Two Li+ Batteries

Functional Block Diagram

VIN

VBAT

ISET

VSEL

TLIM

DCMޓDetector

VSW 㧙VBAT

ILIM Comparator

VDS Ref 㧙

ISET

Buffer

tON(max)

18 μs

Gain

RC

Vth

㧙

tOFF(max)

18 μs

H→L

Triggereޓd Timer

SQ

㧙

RQ

Enable

CHARGE

VDRV

TRIGGER1

TRIGGER2

One-Shot

S

Q

R

㧙

Q

GND

Exposed Pad

SW

DMOS

DONE

GSOURCE

GSINK

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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