TEXAS INSTRUMENTS UCC1800/1/2/3/4/5 UCC2800/1/2/3/4/5 UCC3800/1/2/3/4/5 Low-Power BiCMOS Current-Mode PWM handbook
Datasheet
The UCC1800/1/2/3/4/5 family is a group of high-speed, low-power integrated circuits designed for offline and DC-to-DC fixed frequency current-mode switching power supplies. They feature internal soft start, internal fault soft start, and internal leading-edge blanking of the current-sense signal.