UC3845

IC REG CTRLR PWM CM 8-SOIC,                                           

PMIC - Voltage Regulators - DC DC Switching Controllers
Packaging      Tape & Reel 
PWM Type    Current Mode
Number of Outputs    1
Frequency - Max    275kHz
Duty Cycle    50%
Voltage - Supply    7.6 V ~ 30 V
Isolated    Yes
Package / 8-SOIC (0.154", 3.90mm Width)

​  data sheet