GENERAL DESCRIPTION
The ADP3212/NCP3218 is a highly efficient, multiphase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3212/NCP3218 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 ADP3212/NCP3218 is programmable for 1-, 2-, or 3-phase operation. The output signals ensure interleaved 2- or 3-phase operation.
The ADP3212/NCP3218 uses a multimode architecture run at a programmable switching frequency and optimized for efficiency depending on the output current requirement. The ADP3212/NCP3218 switches between single- and multi-phase operation to maximize efficiency with all load conditions. The chip includes a programmable load line slope function to adjust the output voltage as a function of the load current so that the core voltage is always optimally positioned for a load transient. The ADP3212/NCP3218 also provides accurate and reliable short circuit protection, adjustable current limiting, and a delayed power-good output. The IC supports on-the-fly output voltage changes requested by the CPU.
The ADP3212/NCP3218 are specified over the extended commercial temperature range of -40°C to 100°C. The ADP3212 is available in a 48-lead QFN 7x7mm 0.5 mm pitch package. The NCP3218 is available in a 48-lead QFN 6x6mm 0.4 mm pitch package. Except for the packages, the ADP3212 and NCP3218 are identical. ADP3212 and NCP3218 are Halogen Free, Pb-Free and RoHS compliant.

 FEATURES
   Single-chip solution
      Fully compatible with the Intel® IMVP-6.5™ specifications
   Selectable 1- , 2-, or 3-phase operation with up to 1 MHz per
      phase switching frequency
   Phase 1 and Phase 2 Integrated MOSFET drivers
   Input Voltage Range of 3.3 V to 22 V
   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
   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 programmable latch-off delay
   Clock enable output <delays the CPU clock until the core
      voltage is stable
   Output power or current monitor options
      48-lead QFN 6x6mm (NCP3218)
      48-lead QFN 7x7mm (ADP3212)

APPLICATIONS
   Notebook power supplies for next-generation Intel processors