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BUY TOP221Y https://www.utsource.net/itm/p/481981.html
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Description: TOP221Y is an integrated off-line switcher IC with high voltage startup and low power dissipation. It is designed for use in off-line power supplies with minimal external components. Features: High voltage startup (up to 500V) Low power dissipation Internal soft start Internal frequency jittering Internal current limit Internal thermal shutdown Internal overvoltage protection Internal undervoltage protection Internal overcurrent protection Low standby power Applications: TOP221Y is suitable for use in off-line power supplies such as AC/DC adapters, battery chargers, and LED drivers. It can also be used in other applications such as motor control, lighting control, and industrial control. (For reference only)