FL7733
Overview
This highly integrated PWM controller with advanced Primary-Side Regulation (PSR) technique provides features to enhance the performance of low-to-midpower LED lighting converter. The FL7733 LED driver is designed with minimum system components while LED current is accurately controlled by Fairchild’s TRUECURRENT® technique and improved feedback loop control.
- Cost-Effective Solution without Requiring Input Bulk Capacitor and Secondary Feedback Circuitry
- Power Factor Correction
- THD <10% Over Universal Line Range
- Constant Current Tolerance: < ±1% Over Universal Line Voltage Variation < ±1% by 50% - 100% Load Voltage Variation < ±1% by ±20% Magnetizing Inductance Variation
- High-Voltage Startup with VDD Regulation
- Adaptive Feedback Loop Control for Startup without Overshoot High Reliability
- LED Short / Open Protection
- Output Diode Short Protection
- Sensing Resistor Short / Open Protection
- VDD Over-Voltage Protection (OVP)
