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

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:

Pinout:

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.