NCP81149MNTXG

Overview

The NCP81149MNTXG is a single-phase voltage regulator controller from onsemi, designed for high-performance computing applications. It operates within the NCP81149 series and utilizes a QFN-48 package (CASE 485CJ) with an exposed pad for thermal management. The device supports output voltages ranging from 0.5V to 2.3V. It is supplied in tape and reel packaging, with a standard quantity of 2500 units per reel. This component functions as a dedicated switching controller for generating stable power rails required by modern processors.

Feature Summary

• Single-phase voltage regulation architecture optimized for processor power delivery
• Integrated control logic for managing buck converter topology
• Designed for compatibility with VR12.6 or similar processor voltage requirements

Applications

• Central Processing Unit (CPU) core voltage regulation
• High-performance server power supply designs
• Workstation motherboard power stages

Procurement Notes

Verify current availability status as this component may be subject to end-of-life notices or production changes. Confirm package marking and date codes against specific project requirements. Ensure compliance with RoHS and REACH regulations as indicated in official documentation. Cross-reference ordering part numbers carefully to match the exact suffix specifications required for your design.

Selection Notes

Select this controller when a single-phase solution is sufficient for the target processor's current demands. Consider the QFN-48 footprint constraints and thermal dissipation capabilities during PCB layout. Evaluate the need for external components such as gate drivers or inductors based on the system's efficiency targets. Compare against multi-phase alternatives if higher current capacity is required.

Part Context

This part belongs to the NCP81149 family of single-phase controllers from onsemi. These devices are engineered for low-power, high-density applications where space is limited but precise voltage regulation is critical. The family typically includes variants with different thermal or electrical characteristics, all sharing the same fundamental control architecture and pinout compatibility within the series.

Replacement Considerations

Direct substitutes include other single-phase controllers from the same manufacturer with identical pinouts and functionality. Verify that any replacement maintains the same output voltage range and package dimensions. Check for updated revisions or enhanced features in newer generations of single-phase controllers.