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RT8476A - Two-Stage Hysteretic LED Driver Controller

Description

The RT8476A is a two-stage controller with dual gate drivers consist of a Boost converter (first stage) and a Buck converter (second stage).

The advantage of the twostage topology is highly compatible with ET (Electronic Transformer) in MR16 / AR111 lighting market field applications.

Features

  • Two-Stage Topology (Boost + Buck).
  • Wide Input Voltage Range : 4.5V to 40V.
  • Adjustable Peak Input Current Control.
  • Adjustable Boost Output Voltage.
  • Independent Dual Stage Function.
  • Adjustable LED Current with ±5% LED Current Accuracy.
  • Input Under-Voltage Lockout Detection.
  • Thermal Shutdown Protection.
  • SOP-8 (Exposed Pad) Package.
  • RoHS Compliant and Halogen Free Ordering Information RT8476A Package Type SP : SOP-8 (Exposed Pad-Option 1) Lead P.

📥 Download Datasheet

Datasheet Details

Part number RT8476A
Manufacturer Richtek
File Size 146.41 KB
Description Two-Stage Hysteretic LED Driver Controller
Datasheet download datasheet RT8476A Datasheet

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Full PDF Text Transcription

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® RT8476A Two-Stage Hysteretic LED Driver Controller General Description The RT8476A is a two-stage controller with dual gate drivers consist of a Boost converter (first stage) and a Buck converter (second stage). The advantage of the twostage topology is highly compatible with ET (Electronic Transformer) in MR16 / AR111 lighting market field applications. The first stage is a Boost converter for constant voltage output with inductor peak current over-current protection. The second stage is a Buck converter for constant output current by typical constant peak current regulation. The RT8476A is equipped with dual output gate drivers for external power MOSFETs, suitable for higher power applications. The RT8476A is available in the SOP-8 (Exposed pad) package.
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