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NCP81174MNTXG
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 32QFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：PWM Signal
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：4
- Output Phases：4
- Voltage - Supply (Vcc/Vdd)：7V ~ 20V
- Frequency - Switching：200kHz ~ 1MHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good
- Operating Temperature：0°C ~ 100°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
- Grade：-
- Qualification：-
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Overview
The NCP81174MNTXG is a synchronous buck switching controller manufactured by onsemi, designed for multi-phase power delivery applications. It supports configurable 2, 3, or 4-phase operation with a PWM VID interface for dynamic voltage adjustment. The device operates within an input voltage range of 7V to 20V and features an adjustable switching frequency from 200 kHz to 800 kHz. It delivers outputs up to 2V and includes integrated current-mode control with cycle-by-cycle current limiting. The component is housed in a 32-QFN (5x5 mm) package and functions reliably across an operating temperature range of 0°C to +100°C.
Feature Summary
- Configurable multi-phase architecture supporting 2, 3, or 4 synchronous buck phases
- PWM VID interface enables fast transient response and dynamic voltage scaling
- Integrated current-mode control with cycle-by-cycle current limiting protection
Applications
- GPU power supply designs
- CPU core voltage regulation
- High-performance server power management systems
Procurement Notes
Verify the End-of-Life (EOL) status before procurement, as official documentation indicates this part is obsolete and subject to discontinuation. Confirm that alternative sources are authorized distributors to ensure authenticity. Check for Product Change Notifications (PCN) regarding manufacturing site changes or material substitutions. Ensure compatibility with existing PCB footprints and design-in requirements given the component's retirement status.
Selection Notes
Select this controller for applications requiring flexible phase configuration and precise voltage control via PWM VID. It is suitable for designs needing high efficiency and fast transient response in CPU/GPU power stages. Consider the 32-QFN package constraints and thermal performance during layout. Evaluate long-term availability risks due to EOL status when planning production volumes.
Part Context
This component belongs to the NCP81174 series of synchronous buck controllers from onsemi. It is specifically engineered for high-current, low-voltage power delivery in computing platforms. The series emphasizes compact design and robust protection features for demanding digital load applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Due to the End-of-Life status, consult onsemi technical support for qualified replacement recommendations.
