TOP201YN Three-terminal Off-line PWM Switch 5.8V 1.2mA TO-220/3 (YO3A)

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TOP201YN Three-terminal Off-line PWM Switch 5.8V 1.2mA TO-220/3 (YO3A) The TOP201YN is an integrated off-line PWM switch from the TOP Switch family, designed to simplify AC-DC power supply design by combining a high-voltage power MOSFET, PWM controller, and protection circuitry into a single device. Its three-terminal configuration makes it easy to implement in compact designs, reducing the need for multiple external components while maintaining high efficiency and reliability. This device is widely used in switched-mode power supplies (SMPS), adapters, and chargers, where stable and efficient power conversion is required. The TOP201YN provides built-in protection features such as overcurrent limiting, thermal shutdown, and auto-restart, ensuring safe operation under fault conditions. Its TO-220 package allows better heat dissipation, making it suitable for higher power applications compared to smaller packages. Features: Integrated high-voltage MOSFET and PWM controller. Three-terminal design for simplified circuits. High efficiency power conversion. Built-in thermal shutdown protection. Auto-restart and fault protection. Current limiting protection. Reduced external component count. Suitable for SMPS and AC-DC converters. Specifications: Parameter Value Input Voltage Range Up to 700 V Output Power Up to 20 W Switching Frequency ~100 kHz Drain Current ~0.3 A Control Method PWM Operating Temperature -40°C to +150°C Package Type TO-220-3 Pinout: Pin Name Description 1 Control Feedback and control input 2 Drain High-voltage input 3 Source Ground reference Applications: AC-DC power supplies. Battery chargers. SMPS (Switched Mode Power Supplies). Adapters. Standby power supplies. Consumer electronics power circuits. Package Included: 1x TOP201YN Three-terminal Off-line PWM Switch 5.8V 1.2mA TO-220/3 (YO3A). Documents: TOP201YN Datasheet.