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RT8241
High Efficiency Single Synchronous Buck PWM Controller
General Description
The RT8241 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 RT8241 supports on chip voltage programming function between 0.675V and 0.9V by controlling GX digital inputs.
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 RT8241 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs.
RT8241 Datasheet
