FLS3217N

FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET July 2014 FLS3217 / FLS3247 Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET Features  Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry  Power-Factor Correction (PFC)  Integrated Power MOSFET  Accurate Constant-Current (CC) Control Independent Online Voltage, Output Voltage, and Magnetizing Inductance Variation  Linear Frequency Control for Increased Efficiency  Open / Short-LED Protection  Cycle-by-Cycle Current Limiting  Over-Temperature Protection with Auto Restart  Low Startup Current: 20μA  Low Operating Current: 5mA  VDD Over-Voltage Protection (OVP)  VDD Under-Voltage Lockout (UVLO)  Application Voltage Range: 80 VAC ~ 308 VAC Applications  LED Lighting System Description This highly integrated PWM controller with power MOSFET, FLS3217 / FLS3247, provides several features to enhance the performance of low-power flyback converters. The proprietary topology enables simplified circuit design for LED lighting applications. By using the single-stage topology with primary-side regulation, an LED lighting board can be implemented with the few external components and minimized cost; requiring no input bulk capacitor or feedback circuitry. To implement good power factor and low THD, constant on-time control is utilized with an external capacitor connected to COMI. Precise constant-current...