A8435 datasheet(2/9 Pages) ALLEGRO

2 / 9 page

High Efficiency Charge Pump White LED Driver

A8435

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

Absolute Maximum Ratings

Package Thermal Characteristics

Input or Output Voltage

VIN, VOUT, C1+, C1–, C2+, and C2– pins...................... –0.3 to 6 V

All other pins.....................................................–0.3 to V

IN + 0.3 V

VOUT Short Circuit to GND ....................................................Continuous

Operating Ambient Temperature, TA ..................................... –40°C to 85°C

Maximum Junction Temperature, TJ(max) .............................................150°C

Storage Temperature, TS ................................................... –55°C to 150°C

Selection Guide

Part Number

Packaging*

Package Type

A8435EESTR-T

7-in. reel, 1500 pieces/reel

ES, 3 × 3 mm QFN/MLP-16

*Contact Allegro for additional packing options.

Package is lead (Pb) free, with 100% matte tin leadframe plating.

RθJA = 68 °C/W, on a 4-layer board

(vendor data; unverified)

Additional information is available on the Allegro Web site.

+ –

–

+ –

Fractional Charge Pump

× and 1.5×)

VIN

RSET

LED1

LED2

LED3

LED4

EN1

EN2

VOUT

C1+

C1 –

C2+

C2–

ISET

GND

1 µF

CIN

COUT

CTRL

Minimum Select

Current Mirror

Control, Clock,

and Reference

Functional Block Diagram

A8435 Datenblatt(PDF) 2 Page - Allegro MicroSystems

A8435 Datenblatt(HTML) 2 Page - Allegro MicroSystems

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