TOP258PN Off-line Switcher IC

The TOP258PN Off-Line Switcher IC is a highly integrated, energy-efficient power conversion IC designed for off-line AC-DC power supplies. Part of the TOPSwitch™-HX family, this device integrates a high-voltage power MOSFET, PWM controller, oscillator, thermal shutdown, and protection features into a single compact DIP package.

The TOP258PN simplifies SMPS (Switched Mode Power Supply) design by reducing external components while improving efficiency and reliability. It is ideal for chargers, adapters, industrial power supplies, home appliances, and embedded systems requiring stable and regulated power output.

With built-in protection features such as over-temperature protection, over-voltage protection, and current limiting, the TOP258PN ensures safe and long-lasting operation. It supports a wide input voltage range and delivers high power output with excellent efficiency.

Key Features :

• Integrated high-voltage power MOSFET

• Energy-efficient off-line switcher

• Built-in PWM controller

• Over-temperature and over-voltage protection

• Auto-restart protection for short circuit

• Minimal external components required

• DIP-8 package (PN version)

• High reliability and compact design