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A6271-1 Datasheet Automotive High-Current LED Controller

Manufacturer: Allegro MicroSystems

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General Description

The A6271-1 is a DC-DC converter controller, providing a programmable constant-current output for driving high-power LEDs in series.

The controller is based on a programmable fixed-frequency, peak current-mode control architecture.

The DC-DC converter can be configured in a myriad of different switching configurations including boost, buck-boost, buck (ground-referenced switch), and SEPIC.

Overview

A6271-1 Automotive High-Current LED Controller.

Key Features

  • Automotive AEC-Q100 qualified.
  • Constant-current LED drive.
  • 4.2 to 50 V supply.
  • 53.3 V maximum LED string voltage.
  • Boost, buck-boost, buck, and SEPIC switching converters.
  • Programmable switching frequency 70 to 700 kHz.
  • PWM-controlled PMOS driver allows accurate LED current control at low duty cycles.
  • Dimming via external PWM, internal PWM and/or analog dimming.
  • Frequency dither scheme for effective spread spectrum.

More Datasheets from Allegro MicroSystems

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A6270-1 Automotive LED Controller
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