Click to expand full text
®
RT8228A
Single Synchronous Buck PWM Controller
General Description
The RT8228A 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 input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.
The RT8228A achieves high efficiency at a reduced cost by eliminating the current sense resistor found in traditional current mode PWMs.
RT8228A Datasheet
