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NCP81172MNTXG
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK PSI 24QFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
- Frequency - Switching：200kHz ~ 800kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：PSI
- Control Features：Enable, Frequency Control, Phase Control, Power Good
- Operating Temperature：-40°C ~ 100°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The NCP81172MNTXG is a two-phase synchronous buck switching controller manufactured by onsemi. It operates within a switching frequency range of 200 kHz to 800 kHz and supports a maximum duty cycle of 100%. The device provides a regulated output voltage of 2 V with an output current capability of 2 mA. It functions within a supply voltage range of 4.5 V to 5.5 V and is rated for operation between -40°C and +100°C. The component is housed in a 24-QFN (4x4) package.
Feature Summary
- Supports dual-phase synchronous buck topology with integrated control logic
- Features programmable switching frequency ranging from 200 kHz to 800 kHz
- Includes phase control, frequency control, enable, and power good monitoring capabilities
Applications
- Central processing unit (CPU) core voltage regulation
- Graphics processing unit (GPU) power delivery systems
- High-performance chipset power management
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to ensure correct packaging and temperature grade specifications. Confirm RoHS compliance status through the latest environmental declaration files provided by onsemi. Cross-reference the datasheet revision history to validate pinout compatibility and electrical parameter updates before finalizing procurement orders.
Selection Notes
Select this controller for applications requiring precise multi-phase power delivery with flexible frequency adjustment. Ensure the external inductor and capacitor values are calculated to match the 200 kHz to 800 kHz operating range. Verify that the load transient requirements align with the controller's current-mode control characteristics and stability compensation network.
Part Context
This component belongs to the NCP81172 series of high-efficiency synchronous buck controllers designed for demanding digital load applications. It integrates advanced features to optimize power conversion efficiency while maintaining tight voltage regulation. The series is engineered to support modern low-voltage, high-current processor architectures commonly found in computing and communication equipment.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Ensure any alternative part matches the 24-QFN footprint and electrical specifications. Validate functional compatibility regarding phase count and control interface protocols before implementation.
