GENERAL DESCRIPTION

The ADP3163 is a highly efficient multiphase synchronous buck switching regulator controller optimized for converting a 5 V or 12 V main supply into the core supply voltage required by high performance Intel processors.

FEATURES

ADOPT™ Optimal Positioning Technology for Superior

Load Transient Response and Fewest Output

Capacitors

Complies with VRM 9.0 and Intel VR Down Guideline

with Lowest System Cost

Digitally Selectable 2- or 3-Phase Operation

at up to 500 kHz per Phase

Quad Logic-level PWM Outputs for Interface to

External High-Power Drivers

Active Current Balancing between All Output Phases

Accurate Multiple VRM Module Current Sharing

5-Bit Digitally Programmable 1.1 V to 1.85 V Output

Total Output Accuracy ±0.8 Over Temperature

Current-Mode Operation

Short Circuit Protection

Enhanced Power Good Output Detects Open Outputs in

Multi-VRM Power Systems

Overvoltage Protection Crowbar Protects Microprocessors

with No Additional External Components

APPLICATIONS

Desktop PC Power Supplies for:

Intel Pentium® 4 Processors

AMD Athlon Processors

VRM Modules