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RT8237A/B
High Efficiency Single Synchronous Buck PWM Controller
General Description
The RT8237A/B 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 RT8237A/B achieves high efficiency at a reduced cost by eliminating the current sense resistor found in traditional current mode PWMs.
RT8237A Datasheet
