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BUY UCC3818DTRG4 https://www.utsource.net/itm/p/742179.html
IC PFC CTR AVERAGE 220KHZ 16SOIC
The UCC3818DTRG4 is a high-performance, current-mode, pulse-width modulation (PWM) controller designed for use in off-line and DC-to-DC fixed-frequency current-mode control schemes with a minimum number of external components. It is available in an 8-pin SOIC package. Features: * Low start-up current * Internal soft-start * Internal leading-edge blanking * Internal oscillator with adjustable frequency * Internal slope compensation * Over-temperature protection * Cycle-by-cycle current limiting * Under-voltage lockout Applications: * SMPS for PC, printer, and other peripherals * Offline converters * DC-DC converters * Battery chargers * Motor drives (For reference only)