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ADP3179 Datasheet 4-Bit Programmable Synchronous Buck Controllers

Manufacturer: Analog Devices

Overview: a.

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General Description

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 voltage between 1.3 V and 2.05 V.

They use a current mode, constant off-time architecture to drive two N-channel MOSFETs at a programmable switching frequency that can be optimized for regulator size and efficiency.

Key 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.

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