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NCP81278MNTXG
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Product Detailed Parameters
- Description：IC REG CTRLR CPU GPU 1OUT 20QFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Applications：Controller, CPU GPU
- Voltage - Input：3.6V ~ 24V
- Number of Outputs：1
- Voltage - Output：Up to 2V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：20-QFN (3x3)
- Grade：-
- Qualification：-
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Overview
The NCP81278MNTXG is a 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 single output channel with a switch frequency adjustable between 200 kHz and 800 kHz. It functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a compact 20-VFQFN package with exposed pad, measuring 3x3 mm, suitable for surface mount installation.
Feature Summary
- Synchronous Buck Controller
- CPU/GPU Voltage Regulator
- Single Output Channel
- Extended Temperature Range
Applications
- CPU Power Supply Control
- GPU Voltage Regulation
- Server Motherboard Power Stages
- High-Performance Computing Systems
Procurement Notes
This specific part number (NCP81278MNTXG) has been officially discontinued by the manufacturer as per Product Change Notification records dated February 1, 2021. Procurement should focus on verified replacement components rather than this obsolete variant. Verify current stock availability through authorized distributors if legacy support is strictly required, but prioritize transition to active alternatives.
Selection Notes
Designers requiring this functionality should select the NCP81278TMNTXG as the direct replacement. The TMNTXG variant maintains identical electrical specifications and pinout compatibility while being currently in production. Ensure that PCB layout and thermal design remain consistent when migrating from the MNTXG to the TMNTXG version to maintain system performance stability.
Part Context
The NCP81278 series belongs to onsemi's portfolio of specialized PMICs targeting high-current, low-voltage digital loads. This controller integrates essential protection features and control loops necessary for stable operation in demanding computing environments. The MNTXG suffix denotes the specific packaging and tape/reel configuration used for this discontinued generation of the component.
Replacement Considerations
The confirmed public substitute for the NCP81278MNTXG is the NCP81278TMNTXG. This replacement offers identical functional parameters and physical footprint, ensuring drop-in compatibility for existing designs without requiring schematic or layout modifications.
