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NCV81277MNTXG
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Product Detailed Parameters
- Description：AUTOMOTIVE APPROVED VERSION OF N
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Output Type：PWM Signal
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：4
- Output Phases：4
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 20V
- Frequency - Switching：250kHz ~ 1.2MHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：I2C, PSI
- Control Features：Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 105°C
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：40-VFQFN Exposed Pad
- Supplier Device Package：40-QFNW (5x5)
- Grade：-
- Qualification：-
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Overview
The NCV81277MNTXG is an automotive-approved single-output synchronous buck DC-DC switching controller manufactured by onsemi. It operates within a supply voltage range of 4.5V to 20V and supports adjustable switching frequencies between 250kHz and 1.2MHz. The device utilizes I2C and PSI serial interfaces for configuration and monitoring. Designed for high reliability, it functions across an ambient temperature range of -40°C to 105°C and is housed in a compact 40-QFNW (5x5mm) package with wettable flanks.
Feature Summary
- Automotive-grade qualification ensuring compliance with AEC-Q100 standards for long-term reliability in vehicle environments.
- Integrated digital control architecture enabling precise regulation through I2C and PSI programmable interfaces.
- Synchronous rectification topology designed to maximize conversion efficiency and minimize thermal dissipation.
Applications
- Power distribution units in automotive infotainment systems
- Voltage regulation for electronic control units (ECUs)
- Power management for automotive sensor modules
Procurement Notes
Verify the specific suffix 'MNTXG' against official datasheets to confirm package type and tape-and-reel specifications. Ensure the procurement channel provides valid traceability documentation required for automotive component sourcing. Confirm RoHS3 compliance status prior to finalizing orders to meet environmental regulations.
Selection Notes
Select this component when designing power stages requiring automotive certification and digital interface control. Compare input voltage requirements against the 4.5V to 20V operational window. Evaluate thermal performance needs relative to the QFNW-40 footprint and ensure PCB layout supports the specified switching frequency range for optimal stability.
Part Context
This part belongs to the NCV81277 series of synchronous buck controllers. It serves as the automotive-qualified variant of the commercial NCP81277 model. The series targets applications demanding robust power management solutions with advanced digital control capabilities integrated into a small form factor suitable for space-constrained automotive electronics.
Replacement Considerations
The commercial equivalent is the NCP81277MNTXG. Verify that non-automotive variants meet the required operating temperature and reliability standards before substitution.
