NCP5901BMNTBG NCP5901B (Marking AZ*)

The NCP5901BMNTBG (NCP5901B, marking AZ*) is a high-performance dual MOSFET driver IC from ON Semiconductor, designed for synchronous buck converters and multi-phase VRM stages in laptop motherboards and server boards. It provides fast high-side and low-side MOSFET drive capability, enabling efficient switching, lower conduction losses, and improved thermal performance in high-current CPU/GPU power rails. The device operates with precise timing control, ensuring clean switching transitions and stable voltage regulation under rapid load changes. Widely used in ultrabooks, gaming laptops, and industrial DC-DC power stages, the NCP5901B is known for its reliability and compact QFN/SMD footprint. At OKSpare, we maintain IC ready stock OKSpare, IC supplier OKSpare, and IC available at OKSpare, with every unit quality tested by the OKSpare team.

• High-side & low-side dual MOSFET driver IC

• Designed for synchronous buck VRM power stages

• Fast switching for efficient CPU/GPU regulation

• Low propagation delay for improved transient response

• Compact QFN/SMD package for laptop motherboards

• Ideal for multi-phase VRM and high-current DC-DC modules