BUY UCC2803D https://www.utsource.net/itm/p/817163.html
Low-Power BiCMOS Current-Mode PWM
The UCC2803D is a high-performance current-mode PWM controller manufactured by Texas Instruments. It is designed to provide a cost-effective solution for high-performance, low-cost AC/DC and DC/DC power supplies. Features: * High-performance current-mode PWM controller * Low-cost solution for AC/DC and DC/DC power supplies * High-speed current-mode control * Low-voltage start-up * Low-power shutdown * Programmable frequency * Internal soft-start * Over-current protection Applications: * AC/DC and DC/DC power supplies * Switching power supplies * Motor control applications * Battery chargers * Industrial control systems (For reference only)