This document describes the features and characteristics of Analog Devices' ADP3154 product. The ADP3154 is a 5-bit programmable dual power supply controller for Pentium® III processors. It features active voltage positioning with gain and offset adjustment, providing superior load transient response. The product is compliant with VRM 8.2, VRM 8.3, and VRM 8.4 standards and offers a programmable output voltage range of 1.3V to 3.5V. It operates with high efficiency in current-mode and includes short circuit protection, overvoltage protection, and other features. The ADP3154 also includes a Power Good output and an onboard linear regulator controller.
The ADP3154 is a highly efficient synchronous buck switching regulator controller optimized for converting the 5 V main supply into the core supply voltage required by Pentium III and other high-performance processors. It utilizes an internal 5-bit DAC to read a voltage identification (VID) code directly from the processor, setting the output voltage between 1.3 V and 3.5 V.
| Output Voltage Range | 1.3 V to 3.5 V |
|---|---|
| Compliance Standards | VRM 8.2, VRM 8.3 and VRM 8.4 |
| Output Accuracy | +1% Over Temperature |
| Operating Ambient Temperature Range | 0°C to +70°C |
| Package Type | TSSOP-20 |
It is optimized for Pentium II and Pentium III Processor Families, as well as AMD-K6 Processors.
The device includes short circuit protection, overvoltage protection crowbar, and adjustable current limiting.
The device uses an internal 5-bit DAC to read a VID code directly from the processor.