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HV9803B - LED Driver IC

General Description

The HV9803B is an open-loop, Average-mode current control LED driver IC operating in a constant Off-time mode.

Key Features

  • Fast Average Current Control.
  • Correction for Propagation Delay and Offset Voltage.
  • Fixed Off-time Switching Mode.
  • Linear Dimming Input.
  • PWM Dimming Input.
  • Output Short-circuit Protection with Programmable Skip Mode.
  • Input Undervoltage Shutdown.

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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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HV9803B LED Driver IC with Average-Mode Constant Current Control Features • Fast Average Current Control • Correction for Propagation Delay and Offset Voltage • Fixed Off-time Switching Mode • Linear Dimming Input • PWM Dimming Input • Output Short-circuit Protection with Programmable Skip Mode • Input Undervoltage Shutdown Applications • Backlighting of LCD Panels • General Lighting General Description The HV9803B is an open-loop, Average-mode current control LED driver IC operating in a constant Off-time mode. The IC features ±2% current accuracy and tight line and load regulation of the LED current without any need for loop compensation or high-side current sensing.