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This literature is subject to all applicable copyright laws and is not for resale in any manner.FL6961 Single-Stage Flyback and Boundary Mode PFC Controller for Lighting January 2012 FL6961 Single-Stage Flyback and Boundary Mode PFC Controller for Lighting Features Description Boundary Mode PFC Controller The FL6961 is a general lighting power controller for low- to high-power lumens applications requiring power Low Input Current THD factor correction. It is designed for flyback or boost Controlled On-Time PWM converter operating in Boundary Mode. The FL6961 provides a controlled on-time to regulate Zero-Current Detection the output DC voltage and achieves natural power factor Cycle-by-Cycle Current Limiting correction (PFC). The maximum on-time of the external switch is programmable to ensure safe operation during Leading-Edge Blanking Instead of RC Filtering AC brownouts. An innovative multi-vector error amplifier Low Startup Current: 10A Typical provides rapid transient response and precise output voltage clamping. A built-in circuit disables the controller Low Operating Current: 4.5mA Typical if the output feedback loop is opened. The startup Feedback Open-Loop Protection current is lower than 20A and the operating current is less than 6mA. The supply voltage can be up to 25V, Programmable Maximum On-Time (MOT) maximizing application flexibility. Output Over-Voltage Clamping Protection Clamped Gate Output Voltage: 16.5V Applications General LED Lighting Industrial, Commercial and Residential Fixtures Outdoor Lighting: Street, Roadway, Parking, Construction, and Ornamental LED Lighting Ordering Information Operating Temperature Part Number Package Packing Method Range FL6961MY -40C to +125C 8-Pin, Small Outline Package (SOP) Tape & Reel 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FL6961 Rev. 1.0.2