BUY L6565 https://www.utsource.net/itm/p/1432873.html
QUASI-RESONANT SMPS CONTROLLER
Description: L6565 is a DIP8 (dual in-line package) integrated circuit (IC) manufactured by STMicroelectronics. It is a high voltage, high frequency switch mode power supply controller. Features: High voltage operation up to 500V High frequency operation up to 500kHz Low start-up current Low standby current Internal soft start Internal over-current protection Internal temperature protection Internal frequency jittering Applications: Switch mode power supplies Uninterruptible power supplies Battery chargers Motor control applications Lighting applications (For reference only)