NCP5378MNR2G

Overview

The NCP5378MNR2G is a synchronous buck controller designed for Intel VR12 and AMD CPU voltage regulation applications. It features four independent output channels with integrated high-side and low-side MOSFET drivers. The device supports programmable switching frequencies ranging from 200 kHz to 600 kHz and includes comprehensive protection mechanisms such as over-current, over-voltage, and thermal shutdown. It operates within an input voltage range of 4.75 V to 5.25 V and is housed in a 40-pin QFN package.

Feature Summary

• Integrated gate drivers for synchronous buck topology
• Supports Intel VR12 and AMD CPU power management protocols
• Programmable switching frequency for optimization
• Comprehensive fault protection including OCP and OTP

Applications

• Intel Core processor voltage regulation modules
• AMD CPU power supply designs
• High-performance server motherboard VRMs
• Workstation graphics card power delivery systems

Procurement Notes

Verify the specific suffix MNR2G against official onsemi documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm current lifecycle status as components may be subject to discontinuation notices. Ensure compatibility with existing PCB footprints and design-in requirements before procurement.

Selection Notes

Select this component for designs requiring multi-phase power delivery compliant with Intel VR12 or AMD specifications. Evaluate thermal performance requirements given the QFN-40 package constraints. Verify that the target application benefits from the integrated driver capabilities and programmable frequency range compared to discrete solutions.

Part Context

This part belongs to the NCP5378 family of multi-phase controllers. It is distinct from single-phase drivers like the NCP3420 and other multi-phase variants such as the NCP5392. The NCP5378 specifically targets modern CPU core power delivery standards requiring precise voltage tracking and fast transient response.

Replacement Considerations

Check for direct pin-to-pin replacements within the NCP5378 series or compatible VR12/AMD controllers from onsemi. Verify functional equivalence regarding protocol support and electrical parameters before substituting.