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Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN6961 Boundary Mode PFC Controller August 2016 FAN6961 Boundary Mode PFC Controller Features Description Boundary Mode PFC Controller The FAN6961 is an 8-pin, boundary-mode, PFC controller IC intended for controlling PFC pre- Low Input Current THD regulators. The FAN6961 provides a controlled on-time Controlled On-Time PWM to regulate the output DC voltage and achieve natural power factor correction. The maximum on-time of the Zero-Current Detection external switch is programmable to ensure safe operation during AC brownouts. An innovative multi- Cycle-by-Cycle Current Limiting vector error amplifier is built in to provide rapid transient Leading-Edge Blanking instead of RC Filtering response and precise output voltage clamping. A built- in circuit disables the controller if the output feedback Low Startup Current: 10 A Typical loop is opened. The startup current is lower than 20 A Low Operating Current: 4.5 mA Typical and the operating current has been reduced to under Feedback Open-Loop Protection 6 mA. The supply voltage can be up to 25 V, maximizing application flexibility. Programmable Maximum On-Time (MOT) Output Over-Voltage Clamping Protection Clamped Gate Output Voltage 16.5 V Applications Electric Lamp Ballasts AC-DC Switching Mode Power Converter Open Frame Power Supplies and Power Adapters Flyback Power Converters with ZCS / ZVS Ordering Information Operating Temperature Part Number Package Packing Method Range (1) FAN6961SZ -40C to +125C 8-Pin, Small Outline Package (SOP) Tape & Reel FAN6961DZ -40C to +125C 8-Pin, Dual In-line Package (DIP) Tube (1) FAN6961SY -40C to +125C 8-Pin, Small Outline Package (SOP) Tape & Reel Note: 1. SZ &SY are for Eco status, please refer to