TOP253PN AC-DC offline Switcher IC

TOP253PN AC-DC offline Switcher IC 

The TOP253PN is a highly integrated AC-DC off-line switcher IC from Power Integrations’ TOPSwitch family, designed for building efficient, compact, and reliable switch-mode power supplies (SMPS). It integrates a high-voltage power MOSFET, PWM controller, oscillator, soft-start, and comprehensive protection circuitry into a single device, significantly reducing component count and simplifying power supply design.

The TOP253PN is suitable for medium-power SMPS designs, offering high efficiency, low standby power consumption, and excellent reliability. It is widely used in AC-DC adapters, chargers, consumer electronics, and industrial auxiliary power supplies.

Click here to view related products

Applications

• AC-DC adapters and chargers
• Switch-mode power supplies (SMPS)
• Consumer electronics and home appliances
• Industrial control and automation power supplies
• LED power supplies
• TV, monitor, and set-top box power supplies
• Auxiliary and standby power supplies

Features

• Type: AC-DC off-line switcher IC with integrated MOSFET
• Family: Power Integrations TOPSwitch
• Integrated high-voltage power MOSFET
• Wide AC input range: 85–265V AC (with proper design)
• High efficiency and low no-load / standby power consumption
• Built-in soft-start, current limiting, thermal shutdown, and over-voltage protection
• Auto-restart fault protection
• Frequency jittering for reduced EMI
• Requires minimal external components
• Package: DIP-8 (PN package)
• High reliability and long service life