switch mode power supply - Help finding PWM IC with marking on device 'FA=606'. Package of device is SOT23 - 6 - Electrical Engineering Stack Exchange
UC3843 PWM Controller IC Datasheet - Soldering Mind
Help identifying a 6-pin SMD IC in a power supply.
Amazon.com: IIVVERR Electronic Parts FDS9435A SMD/SMT Package Type 8 Pin PWM Controller IC (Partes electrónicas FDS9435A Tipo de paquete SMD/SMT 8 pines Controlador PWM IC : Industrial & Scientific