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HV9861A - LED Driver

General Description

HV9861A is a patented, average-mode, constant-current control, LED driver IC operating in a constant offtime mode.

Unlike the HV9910B, this control IC does not produce a peak-to-average error, which therefore greatly improves the accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing.

The output LED current accuracy is ±3%.

Overview

HV9861A LED Driver with Average-Mode Constant Current Control.

Key Features

  • Fast average current control.
  • Programmable constant off-time switching.
  • PWM / linear dimming input.
  • Output short circuit protection with skip mode.
  • Ambient operating temperature -40°C to +125°C.
  • Pin-compatible with the HV9910B and HV9961.