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A8518 Datasheet Fault-Tolerant LED Driver

Manufacturer: Allegro MicroSystems

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General Description

The A8518 is a multi-output LED driver for small-size LCD backlighting.

It integrates a current-mode boost converter with internal power switch and two current sinks.

The boost converter can drive up to 22 white LEDs, 11 LEDs per string, at 200 mA.

Overview

A8518 and A8518-1 Wide Input Voltage Range, High-Efficiency, Fault-Tolerant LED.

Key Features

  • Automotive AEC-100 qualified.
  • Fully integrated 42 V MOSFET for boost converter.
  • Fully integrated LED current sinks.
  • Withstands surge input to 40 VIN for load dump.
  • Operates down to 3.9 VIN (max) for idle stop.
  • Drives two strings of LEDs.
  • Maximum output voltage 40 V.
  • Up to 11 white LEDs in series.
  • Drive current for each string is 200 mA.
  • Fixed 2.15 MHz boost switching frequency.
  • Dithering of boost.

More Datasheets from Allegro MicroSystems

Part Number Description
A8518-1 Fault-Tolerant LED Driver
A8510 High Efficiency Fault Tolerant LED Driver
A8511 4-Channel x 150 mA WLED/RGB Driver
A8514 High Efficiency Fault Tolerant LED Driver
A8515 Fault Tolerant LED Driver
A8517 Multi-Channel LED Driver
A8519 Fault-Tolerant LED Driver
A8519-1 Fault-Tolerant LED Driver
A8502 High Efficiency Fault Tolerant LED Driver
A8503 WLED/RGB Driver