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This literature is subject to all applicable copyright laws and is not for resale in any manner.FL6632 Primary-Side-Regulated LED Driver with Power Factor Correction May 2015 FL6632 Primary-Side-Regulated LED Driver with Power Factor Correction Description Features This highly integrated PWM controller provides several Cost-Effective Solution: No Input Bulk Capacitor or features to enhance the performance of low-power Feedback Circuitry flyback converters. The proprietary topology enables simplified circuit design for LED lighting applications. Power Factor Correction Accurate Constant-Current (CC) Control, By using single-stage topology with primary-side Independent Online Voltage, Output Voltage, regulation, a LED lighting board can be implemented and Magnetizing Inductance Variation with few external components and minimized cost. No input bulk capacitor or feedback circuitry is required. To Linear Frequency Control Improves Efficiency and implement good power factor and low THD, constant Simplifies Design on-time control is utilized with an external capacitor Open-LED Protection connected to the COMI pin. Short-LED Protection Precise constant-current control regulates accurate output current versus changes in input voltage and Cycle-by-Cycle Current Limiting output voltage. The operating frequency is proportionally Over-Temperature Protection with Auto Restart adjusted by the output voltage to guarantee DCM operation with higher efficiency and simpler design. Low Startup Current: 20 A FL6632 provides open-LED, short-LED, and over- Low Operating Current: 5 mA temperature protection features. The current limit level V Under-Voltage Lockout (UVLO) DD is automatically reduced to minimize output current and protect external components in a short-LED condition. Gate Output Maximum Voltage Clamped at 18V The FL6632 controller is available in an 8-pin Small- SOP-8 Package Outline Package (SOP). Application Voltage Range: 80 V ~ 308 V AC AC Applications LED Lighting System Ordering Information Operating Packing Part Number Package Temperature Range Method FL6632MX -40C to +125C 8-Lead, Small Outline Integrated Circuit Package (SOIC) Tape & Reel 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com FL6632 Rev. 1.0