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BUY VIPER27H https://www.utsource.net/itm/p/1873512.html
SMPS PRIMARY I.C.
Description: The VIPER27H is a monolithic integrated circuit in a SOP-16 package. It is a high voltage, high speed, low power, fixed frequency current mode PWM controller. Features: High voltage operation up to 600V Low start-up current Low operating current Fixed frequency operation up to 500kHz Internal soft start Internal temperature compensation Internal current limit Internal oscillator Under voltage lockout Over voltage protection Over temperature protection Applications: Switching power supplies DC/DC converters Motor control Lighting control Battery chargers (For reference only)