BUY UC3806N https://www.utsource.net/itm/p/399919.html
Low Power, Dual Output, Current Mode PWM Controller
The UC3806N is a high performance current mode PWM controller. It is designed for off-line and DC-to-DC converter applications. Features: * High performance current mode control * Internal soft-start * Internal leading edge blanking * Internal oscillator * Internal 5V reference * Low start-up current * Low operating current * Over temperature protection Applications: * Off-line power supplies * DC-to-DC converters * Switching regulators * Motor control * Battery chargers (For reference only)