LNK304PN Power Integrations AC DC Off Line Switcher IC

LNK304PN Power Integrations AC DC Off Line Switcher IC 

The LNK304PN is a highly integrated AC-DC off-line switcher IC from Power Integrations’ LinkSwitch-TN family, designed for compact, energy-efficient switch-mode power supplies (SMPS). It combines a high-voltage power MOSFET, PWM controller, oscillator, and built-in protection circuitry into a single device, reducing external components and simplifying power supply design.

The LNK304PN is ideal for low to medium power AC-DC converters, providing high efficiency, ultra-low standby power consumption, and excellent reliability. It is widely used in chargers, adapters, standby power supplies, consumer electronics, and auxiliary power modules.

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Applications

• AC-DC adapters and chargers
• Standby and auxiliary power supplies
• Consumer electronics and home appliances
• Low-power LED drivers
• IoT and small device power modules

Features

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