Wide Input Voltage Range, High-Efficiency,

Fault-Tolerant LED Driver

A8519 and

A8519-1

35

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

For the latest version of this document, visit our website:

www.allegromicro.com

Revision History

Number

Date

Description

–

September 10, 2014 Initial Release

1

October 24, 2014

2

March 18, 2015

Revised OVP Thresholds and Oscillator Frequencies.

3

May 19, 2015

Added A8519-1 variant.

4

June 10, 2015

Fixed typo on page 2; revised FSET pin voltage typical spec.

5

November 4, 2015

Amended “Enabling the IC” (page 12) and “Synchronization” (page 15) of Functional Description;

inserted Figures 18 and 19; updated Selection Guide table (page 2); corrected 2nd Typical Application

Drawing (page 9)

6

January 8, 2016

Amended “Powering Up: Boost Output Undervoltage Protection” (page 13)

7

October 24, 2016

Updated Input Overcurrent Protection and Disconnect Switch section (page 22)

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the information being relied upon is current.

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