LM3880MFX-1AB/NOPB

Power Supply Controllers, Monitors Overview

The LM3880MFX-1AB/NOPB is an automotive-grade simple power sequencer manufactured by Texas Instruments. It monitors three input voltages with a threshold of 1.25 V and provides open-drain outputs. The device features a fixed reset delay time of 60 ms and operates within a supply voltage range of 2.7 V to 5.5 V. It is housed in a SOT-23-6 package and supports surface mount installation. The component functions without manual reset or watchdog timer capabilities, ensuring reliable power sequencing for automotive applications across a temperature range of -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Automotive-grade qualification for reliable operation in vehicle environments
• Monitors three independent voltage rails simultaneously
• Provides fixed time-delayed reset signals for controlled power sequencing

Power Supply Controllers, Monitors Applications

• Automotive power management systems requiring sequential voltage ramp-up
• Multi-rail power distribution units in automotive electronics
• Embedded control modules needing supervised power initialization

Power Supply Controllers, Monitors Procurement Notes

Verify the manufacturer designation as Texas Instruments, as National Semiconductor was acquired. Confirm the specific suffix indicates the 60 ms delay variant. Ensure AEC-Q100 automotive qualification status is required for the target application. Check RoHS compliance documentation for environmental regulations. Validate the SOT-23-6 package outline against PCB footprint requirements before ordering.

Power Supply Controllers, Monitors Selection Notes

Select this component when monitoring three specific voltage rails with a fixed 60 ms delay is required. It is suitable for automotive designs due to its extended temperature range and qualification. Compare with other LM3880 variants if different delay times or input counts are needed. Ensure the open-drain output configuration matches the downstream logic requirements. Verify that the 1.25 V threshold aligns with the monitored rail voltages.

Power Supply Controllers, Monitors Part Context

This part belongs to the LM3880 family of simple power sequencers designed for supervising multiple power rails. It serves as a specialized supervisory circuit within the PMIC category, focusing on sequence control rather than active regulation. The device complements switching controllers and regulators by managing the timing of their activation.

Power Supply Controllers, Monitors Replacement Considerations

LM3880QMF-1AB/NOPB offers identical electrical characteristics in a QMF package variant. LM3880MFX-1AC/NOPB provides a similar function but with a different reset delay time of 16 ms.