Power Integrations, Inc. PMIC - PMIC - AC DC Converters, Offline Switchers - LNK354PN LNK354PN

The LNK354PN is an offline switcher IC from the LinkSwitch-HF family, designed for low power applications with a maximum output power of 5 W in open frame configurations and 4.5 W in enclosed adapters. It operates with a universal input range of 85-265 VAC and features a maximum switching frequency of 200 kHz, which allows for compact transformer designs and minimizes audible noise. The device integrates a 700 V power MOSFET, an oscillator, and a simple ON/OFF control scheme, eliminating the need for a bias winding and reducing overall component count. Key features include built-in auto-restart for short-circuit and open-loop protection, thermal shutdown, and frequency jittering to reduce electromagnetic interference (EMI). The LNK354PN is optimized for energy efficiency, with no-load consumption below 300 mW at 265 VAC input, meeting various energy efficiency standards such as California Energy Commission (CEC) and Energy Star. It is suitable for applications including chargers for portable devices and standby power supplies.