ADP3158 - Analog Devices

ADP3158 4-Bit Programmable Synchronous Buck Controllers

The ADP3158 and ADP3178 are highly efficient synchronous buck switching regulator controllers optimized for converting a 5 V main supply into the core supply voltage required by highperformance processors. These devices use an internal 4-bit DAC to read a voltage identification (VID) code directly from the processor, which is used to set the output voltage b.

Features

Optimally Compensated Active Voltage Positioning with Gain and Offset Adjustment (ADOPT™) for Superior Load Transient Response Complies with VRM Specifications with Lowest System Cost 4-Bit Digitally Programmable 1.3 V to 2.05 V Output N-Channel Synchronous Buck Driver Total Accuracy ؎0.8% Over Temperature Two On-Board Linear Regulator Controllers Designed to Meet System Power Sequencing Requirements High Efficiency Current-Mode Operation Short Circuit Protection for Switching Regulator Overvoltage Protection Crowbar Protects Microprocessors with No Additional External Components APPLICATIONS .