A8740 데이터 시트보기 (PDF) - Allegro MicroSystems

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A8740

Ultra Small Mobile Phone Xenon Photoflash Capacitor Charger with IGBT Driver

Allegro MicroSystems 

A8740

Ultra Small Mobile Phone Xenon Photoflash

Capacitor Charger with IGBT Driver

Selection Guide

Part Number

A8740EEETR-T

Packing

3000 pieces per reel

Package

8-contact DFN/MLP with exposed thermal pad

Absolute Maximum Ratings

Characteristic

SW Pin

VIN_DRV, VBAT Pins

CHARGE, TRIG, ¯D¯¯O¯¯N¯¯E¯ Pins

Remaining Pins

Operating Ambient Temperature

Maximum Junction

Storage Temperature

Symbol

VSW

ISW

VIN

TA

TJ(max)

Tstg

Notes

DC voltage.

(VSW is self-clamped by internal active clamp

and is allowed to exceed 50 V during flyback

spike durations. Maximum repetitive energy

during flyback spike: 0.5 μJ at frequency

≤ 400 kHz.)

DC current, pulse width = 1 ms

Care should be taken to limit the current when

–0.6 V is applied to these pins.

Range E

Rating

–0.3 to 50

3

–0.3 to 6.0

–0.6 to VIN + 0.3 V

–0.3 to VIN + 0.3 V

–40 to 85

150

–55 to 150

Units

V

A

V

V

V

ºC

ºC

ºC

THERMAL CHARACTERISTICS may require derating at maximum conditions

Characteristic

Symbol

Test Conditions*

Package Thermal Resistance

RθJA 4-layer PCB, based on JEDEC standard

*Additional thermal information available on Allegro Web site.

Value Units

49 ºC/W

Allegro MicroSystems, Inc.

2

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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