BUY MC33164P-5 https://www.utsource.net/itm/p/878114.html
Micropower Undervoltage Sensing CircuitsμP
Description: The MC33164P-5 is a high-performance, fixed-frequency, current-mode, pulse-width modulation (PWM) control circuit. Features: Wide operating supply voltage range of 4.5V to 40V Operating frequency up to 500kHz Programmable soft-start Under-voltage lockout Thermal shutdown Current-mode operation for improved line and load transient response Fixed frequency oscillator Output current limit Output short-circuit protection Applications: Switch-mode power supplies DC/DC converters Motor control Battery chargers Lighting control (For reference only)