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A8518 - Fault-Tolerant LED Driver

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.

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.

📥 Download Datasheet

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Other Datasheets by Allegro MicroSystems

Part Number Description
A8518-1 Fault-Tolerant LED Driver
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A8518 and A8518-1 Wide Input Voltage Range, High-Efficiency, Fault-Tolerant LED Driver FEATURES AND BENEFITS • 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.