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RT8479B Datasheet Two-stage Hysteretic Led Driver

Manufacturer: Richtek

Overview: ® RT8479B Two-Stage Hysteretic LED Driver with Internal MOSFETs.

Datasheet Details

Part number RT8479B
Manufacturer Richtek
File Size 135.63 KB
Description Two-Stage Hysteretic LED Driver
Datasheet RT8479B-Richtek.pdf

General Description

The RT8479B is a two-stage controller with dual MOSFETs and consists of a Boost converter (first stage) and a Buck converter (second stage).

The advantage of two-stage topology is highly patible with ET (Electronic Transformer) and extremely high Power Factor performance in MR16 / AR111 lighting market fields applications.

The first stage is a Boost converter for constant voltage output with inductor peak current over-current protection.

Key Features

  • Two-Stage Topology (Boost + Buck).
  • Dual MOSFETs Inside.
  • Wide Input Voltage Range : 4.5V to 36V.
  • Excellent Power Factor.
  • Programmable Boost Output Voltage.
  • Independent Dual Stage Function.
  • Programmable LED current with ±5% LED Current Accuracy.
  • Input Under-Voltage Lockout Detection.
  • Thermal Shutdown Protection Ordering Information RT8479B Package Type SP : SOP-8 (Exposed Pad-Option 2) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Ric.

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RT8479B Distributor