Ultra Small Mobile Phone Xenon Photoflash

Capacitor Charger with IGBT Driver

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

A8735

Selection Guide

Part Number

Packing

Package

A8735EEETR-T

3000 pieces per reel

8-contact DFN/MLP with exposed thermal pad

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

SW Pin

DC voltage.

and is allowed to exceed 50 V during flyback

spike durations. Maximum repetitive energy

during flyback spike: 0.5 μJ at frequency

≤ 400 kHz.)

–0.3 to 50

V

DC current, pulse width = 1 ms

3

A

VIN_DRV, VBAT Pins

–0.3 to 6.0

V

CHARGE, TRIG, ¯D¯¯O¯¯N¯¯E¯ Pins

Care should be taken to limit the current when

–0.6 V is applied to these pins.

V

Remaining Pins

V

Operating Ambient Temperature

Range E

–40 to 85

ºC

Maximum Junction

150

ºC

Storage Temperature

–55 to 150

ºC

THERMAL CHARACTERISTICS may require derating at maximum conditions

Characteristic

Symbol

Test Conditions*

Value Units

Package Thermal Resistance

4-layer PCB, based on JEDEC standard

49

ºC/W

*Additional thermal information available on Allegro Web site.