RT8238A Datasheet (RICHTEK) - Single Synchronous Buck PWM Controller

RT8238A, Single Synchronous Buck PWM Controller

The RT8238A PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers.

The constant on-time PWM control scheme handles wide i

RT8238A Features

* z Built in 1% 0.5V Reference Voltage z Adjustable 0.5V to 3.3V Output Range z Quick Load Step Response within 100ns z 4700ppm/°C Programmable Current Limit by Low Side RDS(ON) Sensing z 4.5V to 26V Battery Input Range z Resistor Programmable Frequency z Internal Ramp Current Limit Soft-Start Control