BUY TOP243R-TL https://www.utsource.net/itm/p/758332.html
SMPS Controller
Description: TOP243R-TL is a high-performance, high-efficiency, off-line, fixed-frequency, current-mode PWM controller. Features: High-efficiency, fixed-frequency current-mode PWM controller Internal start-up current limiting Internal soft-start Internal over-voltage protection Internal over-temperature protection Internal short-circuit protection Internal frequency jittering Low start-up current Low operating current Low stand-by current High peak current capability Applications: AC/DC adapters Battery chargers Off-line converters High-efficiency lighting Motor control (For reference only)