NCV81275AMNTXG

Overview

The NCV81275AMNTXG is an automotive-approved synchronous buck switching controller manufactured by onsemi. It operates with a fixed switching frequency of 1.2 MHz and supports a maximum output current of 200 µA. The device delivers a regulated output voltage of 3 V and functions within an ambient temperature range from -40 °C to +105 °C. It utilizes a QFNW-40 surface-mount package and features a fast fall time of 3 ns.

Feature Summary

• Automotive-grade qualification for reliable operation in vehicle environments
• Fixed high-frequency switching topology for compact passive component sizing
• Integrated synchronous rectification control for improved efficiency

Applications

• Automotive infotainment system power distribution
• Vehicle body control module logic supply regulation
• Sensor interface circuit biasing in automotive platforms

Procurement Notes

Verify the specific suffix AMNTXG against the official datasheet to confirm package type and tape-and-reel specifications. Ensure the automotive grade designation aligns with your project's reliability requirements. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through the latest product compliance documentation provided by onsemi.

Selection Notes

Select this component when a fixed 1.2 MHz frequency is required for automotive applications. The 3 V output and low current capability suit logic supply needs rather than high-power loads. The QFNW-40 package offers thermal performance suitable for constrained board spaces. Verify input voltage ranges match the source rail before integration into the power architecture.

Part Context

This controller belongs to the NCV81275 family of synchronous buck regulators designed specifically for automotive electronics. The series provides robust power management solutions compliant with automotive environmental standards. It serves as a specialized solution for low-current, high-reliability voltage regulation tasks within vehicle electrical systems.

Replacement Considerations

Check the NCV81275 datasheet for direct pin-compatible alternatives within the same family. Evaluate other automotive buck controllers if different output voltages or current capabilities are required. Ensure any substitute maintains the 1.2 MHz switching frequency and QFNW-40 package constraints.