Datasheet4U Logo Datasheet4U.com

FL7733A - Primary-Side-Regulated LED Driver

General Description

The FL7733A is a highly-integrated PWM controller with advanced Primary-Side Regulation (PSR) technique to minimize components in low-to-mid-power LED lighting converters.

Using an innovative TRUECURRENT® technology to provide tight tolerance constant-current output, this LED driver enables designs with constant current (CC) tolerance of less than ±1% over the universal line voltage range to meet stringent LED brightness requirements.

By minimizing turn-on time fluctuation, high power factor and low THD over the universal line range are obtained in the FL7733A.

Overview

FL7733A — Primary-Side-Regulated LED Driver with Power Factor Correction December 2014 FL7733A Primary-Side-Regulated LED Driver with Power Factor.

Key Features

  • Performance.
  • < ±3% Total Constant Current Tolerance Over All Conditions < ±1% Over Universal Line Voltage Variation < ±1% from 50% to 100% Load Voltage Variation < ±1% with ±20% Magnetizing Inductance Variation.
  • Primary-Side Regulation (PSR) Control for Cost- Effective Solution without Requiring Input Bulk Capacitor and Secondary Feedback Circuitry.