7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller

The ADP3208C is a highly efficient, multiphase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3208C is optimized for converting the notebook battery voltage into the core supply voltage required by high performance Intel processors. An internal 7−bit DAC is used to read a VID code directly from the processor and to set the CPU core voltage to a value within the range of 0.3 V to 1.5 V. The phase relationship of the output signals ensures interleaved 2−phase operation.

FEATUREs
• Single−Chip Solution
• Fully Compatible with the Intel® IMVP−6+™ Specifications
• Integrated MOSFET Drivers
• Input Voltage Range of 3.3 V to 22 V
• Selectable 1− or 2−Phase Operation with Up to 1 MHz per Phase Switching Frequency
• Guaranteed ±8 mV Worst−Case Differentially Sensed Core Voltage Error Overtemperature
• Automatic Power−Saving Mode Maximizes Efficiency with Light Load During Deeper Sleep Operation
• Soft Transient Control Reduces Inrush Current and Audio Noise
• Active Current Balancing Between Output Phases
• Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility
• Built−In Power−Good Blanking Supports Voltage Identification (VID) OTF Transients
• 7−Bit, Digitally Programmable DAC with 0.3 V to 1.5 V Output
• Short−Circuit Protection with Latchoff Delay
• Clock Enable Output Delays the CPU Clock Until the Core Voltage is Stable
• Output Load Current Monitor
• This is a Pb−Free Device

APPLICATIONs
• Notebook Power Supplies for Next Generation Intel® Processors