rt9221cs Microcontroller of PDF datasheet

RT9221CS
Manufacturer : ETC
Description : PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER

RT9221CS
Manufacturer : Richtek
Description : Programmable synchronous PWM buck converter with 1.5/2.5V dual low dropout linear regulator controller