BUY UC3842AL https://www.utsource.net/itm/p/11259420.html

Description: The UC3842AL is a high performance current mode PWM controller. Features: - High performance current mode control - Internal fixed frequency oscillator - Programmable soft-start - Programmable line under-voltage lockout - Programmable oscillator frequency - Programmable dead time - Programmable peak current limit - Programmable output voltage Applications: - Switching power supplies - Motor control - Uninterruptible power supplies - Battery chargers - Lighting ballasts - Automotive electronics (For reference only)