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