NCP81278TMNTXG

Overview

The NCP81278TMNTXG is a compact, two-phase synchronous buck controller designed for CPU and GPU power applications. It operates within an input voltage range of 3.6V to 24V and supports output voltages up to 2V. The device features a switchable frequency between 200 kHz and 800 kHz, with rise and fall times of 3 ns. It functions in an industrial temperature range from -40°C to +125°C and consumes 4.65 mA of quiescent current. Packaged in a 20-QFN (3x3) surface-mount format, it integrates shutdown capabilities.

Feature Summary

• Compact two-phase synchronous buck control architecture
• Integrated fast switching transitions for efficiency optimization
• Industrial-grade thermal performance capability
• Configurable switching frequency operation

Applications

• CPU core voltage regulation
• GPU power supply systems
• High-density point-of-load conversion

Procurement Notes

Verify the specific suffix 'T' against the original design requirements, as it denotes a distinct variant from the standard NCP81278MNTXG which has been discontinued. Confirm that the 20-QFN footprint matches the PCB layout. Ensure the component meets RoHS3 compliance standards required by the target assembly process. Cross-reference the datasheet revision to confirm pinout compatibility if replacing older inventory.

Selection Notes

Select this component when a dual-phase solution is required for moderate current loads in space-constrained designs. It serves as a direct replacement for the obsolete NCP81278MNTXG. Consider the 200-800 kHz frequency range for balancing EMI and passive component size. Verify that the 3.6V minimum input voltage aligns with the system's available rail during brown-out conditions.

Part Context

This part belongs to the NCP81278T series of specialized PMICs focused on processor power delivery. It complements other multi-phase controllers like the NCP81276MNTXG but offers a reduced phase count for simpler board layouts. The series targets high-performance computing environments requiring precise voltage tracking and rapid transient response.

Replacement Considerations

NCP81278TMNTXG is the active substitute for the discontinued NCP81278MNTXG.