ADP3159 - Analog Devices

ADP3159 4-Bit Programmable Synchronous Buck Controllers

The ADP3159 and ADP3179 are highly efficient output synchronous buck switching regulator controllers optimized for converting a 5 V main supply into the core supply voltage required by high-performance 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 .

Features

Optimally Compensated Active Voltage Positioning with Gain and Offset Adjustment (ADOPT™) for Superior Load Transient Response Complies with VRM 8.4 Specifications with Lowest System Cost 4-Bit Digitally Programmable 1.3 V to 2.05 V Output N-Channel Synchronous Buck Driver Two On-Board Linear Regulator Controllers Total Accuracy ؎0.8% Over Temperature High Efficiency Current-Mode Operation Short Circuit Protection Power Good Output Overvoltage Protection Crowbar Protects Microprocessors with No Additional External Components APPLICATIONS Core Supply Voltage Generation for: Intel Pentium® III I.