GENERAL DESCRIPTION

The ADP3156 is a highly efficient synchronous buck switching regulator controller optimized for converting the 3.3 V or 5 V main supply into lower supply voltages required on the motherboards of Pentium® III and other high performance processor systems.

FEATURES

Active Voltage Positioning with Gain and Offset Adjustment

Optimal Compensation for Superior Load Transient Response

Fixed 1.5 V, 1.8 V and 2.5 V Output Versions

Dual N-Channel Synchronous Driver

On-Board Linear Regulator Controller

Total Output Accuracy 61 Over Temperature

High Efficiency, Current-Mode Operation

Short Circuit Protection

Overvoltage Protection Crowbar Protects Loads with No Additional External Components

Power Good Output

SO-16 Package

APPLICATIONS

Desktop Computer Supplies

ACPI-Compliant Power Systems

General Purpose DC-DC Converters