FL7730MY

FL7730MY — Single-Stage Primary-Side-Regulation PWM Controller for PFC and LED Dimmable Driving February 2012 FL7730MY Single-Stage Primary-Side-Regulation PWM Controller for PFC and LED Dimmable Driving Features  Compatible with Traditional TRIAC Control (No need to change existing lamp infrastructure: wall switch & wire)  Compatible with Non-Dimming Lamp Designs  Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry  Power Factor Correction (PFC)  Accurate Constant-Current (CC) Control, Independent Online Voltage, Output Voltage, Magnetizing Inductance Variation  Line Voltage Compensation for CC Control  Linear Frequency Control for Better Efficiency and Simple Design  Open-LED Protection  Short-LED Protection  Cycle-by-Cycle Current Limiting  Over-Temperature Protection with Auto Restart  Low Startup Current: 20μA  Low Operating Current: 5mA  Frequency Hopping for Better EMI Performance  SOP-8 Package Available  Application Voltage Range: 80VAC ~ 308VAC Description This highly integrated PWM controller, FL7730MY, provides several features to enhance the performance of single-stage flyback converters. The proprietary topology, TRUECURRENT™, enables the simplified circuit design for LED lighting applications. TRIAC dimming is smoothly managed by dimming brightness control without flicker. By using single-stage topology with primary-side regulation, an LED lighting board can be implemented with few external components and minimized co...