FAN7529 Datasheet

Critical Conduction Mode PFC Controller


The FAN7529 is an active power factor correction (PFC) controller for boost PFC applications that operates in crit
ical conduction mode (CRM). It uses the voltage mode PWM that compares an internal ramp signal with the
error amplifier output to generate MOSFET turn-off signal.

„Low Total Harmonic Distortion (THD)
„Precise Adjustable Output Over-Voltage Protection
„Open-Feedback Protection and Disable Function
„Zero Current Detector
„150µs Internal Start-up Timer
„MOSFET Over-Current Protection
„Under-Voltage Lockout with 3.5V Hysteresis
„Low Start-up (40µA) and Operating Current (1.5mA)
„Totem Pole Output with High State Clamp
„+500/-800mA Peak Gate Drive Current
„8-Pin DIP or 8-Pin SOP




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Manufacturer information


Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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