GENERAL DESCRIPTION

The ADP3153 is a highly efficient synchronous switching regulator controller and a linear regulator controller. The switching regulator controller is optimized for Pentium II and Deschutes Processor applications where 5 V is stepped down to a digitally controlled output voltage between 1.8 V and 3.5 V. Using a 5-bit DAC to read a voltage identification (VID) code directly from the processor, the ADP3153 uses a current mode constant offtime architecture to generate its precise output voltage.

FEATURES

5-Bit Digitally Programmable 1.8 V to 3.5 V Output Voltage

Dual N-Channel Synchronous Driver

Total Output Accuracy 61 (08C to +708C)

High Efficiency

Current-Mode Operation

Short Circuit Protection

Power Good Output

Overvoltage Protection Crowbar

On-Board Linear Regulator Controller

VRM 8.2 Compatible

Narrow Body TSSOP 20-Lead Package

APPLICATIONS

Desktop PC Power Supply for:

Pentium II Processor

Deschutes Processor

Pentium Pro Processor

Pentium Processor

AMD–K6 Processor

VRM Modules