BUY MIC38HC44YN https://www.utsource.net/itm/p/6409713.html
BiCMOS 1A Current-Mode PWM Controllers
Description: The MIC38HC44YN is a high-speed, low-power, CMOS, voltage-mode PWM controller with an integrated 5V regulator. Features: Wide operating voltage range: 4.5V to 18V Low quiescent current High-speed PWM switching frequency Internal 5V regulator Low-voltage lockout Undervoltage lockout Overvoltage protection Overcurrent protection Thermal shutdown Applications: Switching power supplies DC/DC converters Battery chargers Motor control LED lighting (For reference only)