Datasheet

User's Guide

SLUUA02–AUGUST 2012

LM3447-PAR-230VEVM is a Phase-Dimmable, Primary-

Side Regulated LED Driver

1 Introduction

The LM3447-PAR-230VEVM is a 16-W, 230-V

isolated dimmable LED driver with form-factors intended

for BR and PAR applications.

2 Description

The LM3447-PAR-230VEVM is a primary-side power regulated PFC controller used for commercial and

residential phase-cut dimmer compatible LED lamp drivers. The LM3447-PAR-230VEVM uses fixed

frequency valley switching operation resulting in discontinuous current operation.

2.1 Typical Applications

• BR Bulb Form Factor

• PAR Bulb Form Factor

2.2 Features

• Primary-Side Control

• Power Factor Correction

• Leading and Trailing Edge Compatible

• 50:1 Dimming Range

• Valley Switching with Fixed Frequency Discontinuous Operation

• Thermal Foldback

• Efficient Triac Hold Current Operation

• LED Short and Open Circuit Protection

SLUUA02–AUGUST 2012 LM3447-PAR-230VEVM is a Phase-Dimmable, Primary-Side Regulated LED

Driver

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