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RT7304 - Primary-Side-Regulation LED Driver Controller

Description

The RT7304 is a constant current LED driver with active power factor correction.

It supports high power factor across a wide range of line voltages, and it drives the converter in the Quasi-Resonant (QR) mode to achieve higher efficiency.

Features

  • Tight LED Current Regulation.
  • No Opto-Coupler and TL431 Required.
  • Power Factor Correction (PFC).
  • Quasi-Resonant.
  • Maximum/Minimum Switching Frequency Clamping.
  • Maximum/Minimum On-Time Limitation.
  • Wide VDD Voltage Range (up to 25V).
  • Multiple Protection Features  LED Open-Circuit Protection  LED Short-Circuit Protection  Output Diode Short-Circuit Protection  VDD Under-Voltage Lockout  VDD Over-Voltage Protection  Over-Temperature Protection  Cycle-by.

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Datasheet Details

Part number RT7304
Manufacturer Richtek
File Size 270.56 KB
Description Primary-Side-Regulation LED Driver Controller
Datasheet download datasheet RT7304 Datasheet

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Full PDF Text Transcription

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® RT7304 Primary-Side-Regulation LED Driver Controller with Active PFC General Description The RT7304 is a constant current LED driver with active power factor correction. It supports high power factor across a wide range of line voltages, and it drives the converter in the Quasi-Resonant (QR) mode to achieve higher efficiency. By using Primary Side Regulation (PSR), the RT7304 controls the output current accurately without a shunt regulator and an opto-coupler at the secondary side, reducing the external component count, the cost, and the volume of the driver board.
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