RT8479B Datasheet - Richtek

RT8479B - Two-Stage Hysteretic LED Driver

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 compatible with ET (Electronic Transformer) and extremely high Power Factor performance in MR16 / AR111 lighting .

RT8479B 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-Vol

RT8479B-Richtek.pdf