BUY SG3524P https://www.utsource.net/itm/p/11754672.html

Description: SG3524P is a pulse width modulation (PWM) control integrated circuit (IC) with a built-in 5V reference. Features: Output current up to 1.5A Internal 5V reference Internal oscillator Pulse-by-pulse current limiting Under-voltage lockout Programmable frequency up to 500kHz Programmable dead time Programmable oscillator slope Applications: Switching power supplies Motor control Battery chargers Uninterruptible power supplies Lighting ballasts Automotive applications (For reference only)