LM3880QMFX-1AC/NOPB

Power Supply Controllers, Monitors Overview

The LM3880QMFX-1AC/NOPB is an automotive-grade simple power sequencer manufactured by Texas Instruments. It operates within a supply voltage range of 2.7V to 5.5V and draws a typical supply current of 25 µA. The device supports three monitored inputs with open collector/drain outputs and features fixed time delays for sequencing. It is housed in a compact SOT-23-6 package and is qualified under AEC-Q100 standards, ensuring reliability for automotive applications across an operating temperature range of -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for reliable operation in vehicle environments.
• Provides fixed time delay sequencing for up to three monitored power rails without requiring external programming components.
• Features low quiescent current consumption of 25 µA to minimize power drain during standby or active states.

Power Supply Controllers, Monitors Applications

• Power supply sequencing in automotive electronic control units (ECUs)
• System startup management in automotive infotainment systems
• Voltage rail ordering in automotive sensor modules

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix '1AC' against the official Texas Instruments datasheet to confirm the exact pinout configuration and fixed delay timing characteristics. Ensure the component is sourced from authorized distributors to guarantee authenticity and adherence to AEC-Q100 automotive quality standards. Cross-reference the marking code on the physical package with the manufacturer's latest Pin 1 Dot Mark implementation notices to avoid counterfeit risks.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing automotive systems requiring a fixed-sequence power-up for multiple rails without complex programmability. It is suitable for applications where low standby current is critical and external timing resistors are undesirable. Compare against other LM3880 variants if different delay times or input counts are required. Ensure the SOT-23-6 footprint matches the PCB layout constraints.

Power Supply Controllers, Monitors Part Context

This part belongs to the LM3880 family of simple power sequencers designed specifically for automotive electronics. The 'Q' designation indicates automotive grade qualification, while 'MFX' specifies the SOT-23-6 tape-and-reel packaging. The 'NOPB' suffix confirms lead-free and RoHS compliance. This series provides a cost-effective solution for managing power-on sequences in constrained automotive environments.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other LM3880 variants such as LM3880QMFE-1AE/NOPB or LM3880QMF-1AA/NOPB, provided the fixed delay times and pin configurations are compatible. Verify that any replacement maintains the same AEC-Q100 qualification and SOT-23-6 package type to ensure mechanical and electrical interchangeability.

Power Supply Controllers, Monitors FAQ

Does the LM3880QMFX-1AC/NOPB support manual reset?

No, the device does not feature a manual reset input; it relies on automatic sequencing based on monitored input voltages.

What is the output type of the sequencer channels?

The output type is open collector/drain, which typically requires external pull-up resistors for proper operation.