GENERAL DESCRIPTION

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 over temperature

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) on-the-fly transients

7-bit, digitally programmable DAC with 0.3 V to 1.5 V output

Short-circuit protection with latch-off delay

Clock enable output delays the CPU clock until the core voltage is stable

Output load current monitor

48-lead LFCSP

APPLICATIONS

Notebook power supplies for next-generation Intel processors