Datasheet Summary
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Dual-Phase COT Buck PWM Controller with Dynamic Voltage Control
General Description
The RT8811B is a 2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and puter applications. The IC integrates a Constant-On-Time (COT) PWM controller, two MOSFET drivers with internal bootstrap diodes, as well as channel current balance and protection functions including Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), current limit, and thermal shutdown into the WQFN-24L 4x4 package.
The RT8811B adopts RDS(ON) current sensing technique. Current limit is acplished through continuous inductorcurrent-sense, while RDS(ON)...