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RT7302 - Primary-Side-Regulation Dimmable LED Driver Controller

Description

The RT7302 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).
  • Compatible with PWM Dimming.
  • Built-in HV Start-up Device.
  • Quasi-Resonant.
  • Maximum/Minimum Switching Frequency Clamping.
  • Input Voltage Feed-Forward Compensation.
  • 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-Cir.

📥 Download Datasheet

Datasheet Details

Part number RT7302
Manufacturer Richtek
File Size 273.14 KB
Description Primary-Side-Regulation Dimmable LED Driver Controller
Datasheet download datasheet RT7302 Datasheet

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Full PDF Text Transcription

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® RT7302 Primary-Side-Regulation Dimmable LED Driver Controller with Active PFC General Description The RT7302 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 RT7302 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. The RT7302 is designed to be compatible with PWM Dimming. The output current can be modulated by the duty ratio of the external PWM dimming signal.
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