BUY TL494BDG https://www.utsource.net/itm/p/11224159.html

Description: The TL494BDG is a pulse-width modulation (PWM) control circuit designed for switch-mode power supplies. Features: Operating Voltage Range of 4.5V to 16V Output Current of up to 500mA High-Speed Pulse-Width Modulation Frequency Control Undervoltage Lockout Thermal Shutdown Current Limit Applications: Switch-Mode Power Supplies Motor Control Battery Chargers AC-DC Converters DC-DC Converters (For reference only)