FL7733A

FL7733A — Primary-Side-Regulated LED Driver with Power Factor Correction December 2014 FL7733A Primary-Side-Regulated LED Driver with Power Factor Correction 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  Application Input Voltage Range: 80 VAC - 308 VAC  High PF of >0.9, and Low THD of < 10% Over Universal Line Input Range  Fast < 200 ms Start-up (at 85 VAC) using Internal High-Voltage Startup with VDD Regulation  Adaptive Feedback Loop Control for Startup without Overshoot System Protection  LED Short / Open Protection  Output Diode Short Protection  Sensing Resistor Short / Open Protection  VDD Over-Voltage Protection (OVP)  VDD Under-Voltage Lockout (UVLO)  Over-Temperature Protection (OTP)  All Protections are Auto Restart (AR)  Cycle-by-Cycle Current Limit Applications  Low to Mid Power LED Lighting Systems of 5 W to greater than 60 W Compatible with Analog Dimming function 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 ou...