NCP3218AMNR2G

The ON Semiconductor NCP3218AMNR2G is a highly efficient, multi-phase synchronous buck switching regulator controller. It is optimized for converting notebook battery voltage into the core supply voltage required by high-performance Intel processors, specifically those compliant with Intel IMVP-6.5™ specifications.

This controller features an integrated 7-bit DAC for reading VID codes directly from the processor, enabling precise CPU core voltage setting within the range of 0.3 V to 1.5 V. It supports selectable 1-, 2-, or 3-phase operation, with output signals ensuring interleaved multi-phase operation for reduced ripple current. The device utilizes a multimode architecture with a programmable switching frequency, optimizing efficiency across various load conditions by switching between single- and multi-phase operation.

The NCP3218AMNR2G includes a programmable load line slope function to adjust output voltage based on load current, ensuring optimal positioning for load transients. It provides accurate short-circuit protection, adjustable current limiting, and a delayed power-good output. The IC supports On-The-Fly (OTF) output voltage changes requested by the CPU.

Specified over the extended commercial temperature range of -40°C to 100°C, the NCP3218AMNR2G is available in a 48-lead QFN 6x6mm package with an exposed pad for enhanced thermal grounding. It is designed for mobile computing platforms where transient response and thermal management are critical, offering a compact, single-chip solution with integrated drivers to reduce BOM and PCB area.