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