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ALT80800 - Constant-Current 2.0A PWM Dimmable Synchronous Buck LED Driver

General Description

The ALT80800 is a synchronous buck switching regulator that provides constant-current output to drive high-power LEDs.

It integrates both high-side and low-side N-channel DMOS switches for DC-to-DC step-down conversion.

Key Features

  • AEC-Q100 qualified.
  • Supply voltage 4.5 to 55 V.
  • 2.0 A maximum output over operating temperature range.
  • Integrated high-side and low-side MOSFETs: 200 mΩ  / 150 mΩTYP.
  • True average output current control.
  • Internal control loop compensation.
  • Integrated 5 V, 14 mA LDO regulator for peripheral circuits.
  • Dimming via PWM pin or EN pin down to 0.1% at 200 Hz.
  • Analog dimming (ADIM pin) for brightness calibration and therma.

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ALT80800 Automotive-Grade, Constant-Current 2.0 A PWM Dimmable Synchronous Buck LED Driver FEATURES AND BENEFITS • AEC-Q100 qualified • Supply voltage 4.5 to 55 V • 2.0 A maximum output over operating temperature range • Integrated high-side and low-side MOSFETs: 200 mΩ  / 150 mΩTYP • True average output current control • Internal control loop compensation • Integrated 5 V, 14 mA LDO regulator for peripheral circuits • Dimming via PWM pin or EN pin down to 0.