General Description

The RT8841 is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for VR11 CPU power application. RT8841 uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various applications. RT8841 comes to a small footprint with WQFN-40L 6x6 package

Features

12V Power Supply Voltage

4/3/2/1-Phase Power Conversion

2 Embedded MOSFET Drivers

nternal Regulated 5V Output

VID Tables for Intel VRD11/VRD10.x and AMD K8, K8_M2 CPUs

Continuous Differential Inductor DCR Current Sense

Adjustable Soft Start

Adjustable Frequency

Power Good Indication

Adjustable Over Current Protection

Over Voltage Protection

Small 40-Lead WQFN Package

RoHS Compliant and 100 Lead(Pb)-Free

Applications

Desktop CPU Core Power

Low Voltage, High Current DC/ DC Converter