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General Description

The RT8803A is a 2/3-phase synchronous buck controller specifically designed to power Intel?/ AMD next generation microprocessors. It implements an internal 8-bit DAC that is identified by VID code of microprocessor directly. RT8803A generates VID table that conform to Intel? VRD10.x and VRD11 core power with 6.25mV increments and 0.5 accuracy.

Features

5V Power Supply

2/3-Phase Power Conversion with Automatic Phase Selection

8-bit VID Interface, Supporting Intel VRD11/VRD10.x and AMD K8, K8_M2 CPUs

VR_HOT and VR_FAN Indication

Precision Core Voltage Regulation

Power Stage Thermal Balance by DCR Current Sensing

Adjustable Soft-start

Over-Voltage Protection

Adjustable Frequency and Typical at 300kHz per Phase

Power Good Indication

32-Lead VQFN Package

RoHS Compliant and 100 Lead (Pb)-Free