BUY UC3543N https://www.utsource.net/itm/p/482906.html
Dual low power asynchronous stereo audio Codec with integrated power amplifiers
Description: The UC3543N is a high performance, fixed frequency, current mode, pulse width modulation (PWM) control circuit. Features: High performance current mode control Internal soft start Internal loop compensation Internal oscillator Internal 5V reference Under-voltage lockout Output short circuit protection Output current limiting Thermal shutdown Applications: Switching power supplies Motor control Battery chargers DC/DC converters AC/DC converters Inverters (For reference only)