10PCS CR6850 6850 SOT23-6 PWM Controller Power Supply IC - AliExpress
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
MAX669EUB - IC - SMD 10 pin switching PWM controller