LM3880MF-1AE/NOPB

Power Supply Controllers, Monitors Overview

The LM3880MF-1AE/NOPB is an automotive-grade simple power sequencer manufactured by Texas Instruments. It monitors three input voltages and generates open-drain reset signals with fixed time delays to sequence power rails. The device operates within a supply voltage range of 2.7V to 5.5V and draws a typical supply current of 25 µA. It features a threshold voltage of 1.25 V and offers a reset delay time of 2 ms for the specific -1AE suffix variant. The component is housed in a compact SOT-23-6 package and is qualified under AEC-Q100 standards, supporting operation across an extended temperature range from -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Monitors three independent input voltages to ensure proper power sequencing
• Provides open-drain output signals for driving downstream reset lines
• Operates with low supply current consumption suitable for battery-powered applications
• Qualified for automotive environments meeting AEC-Q100 reliability standards

Power Supply Controllers, Monitors Applications

• Automotive infotainment system power management
• Engine control unit (ECU) voltage sequencing
• Body control module power rail initialization
• ADAS sensor power-up sequences

Power Supply Controllers, Monitors Procurement Notes

Verify the complete part number including the suffix to confirm the specific reset delay time, as variations exist within the LM3880 family. Ensure the sourcing channel provides components with valid traceability documentation required for automotive grade parts. Confirm RoHS compliance status matches project requirements. Check for any recent pin marking or packaging changes documented in Product Change Notifications before placing large orders.

Power Supply Controllers, Monitors Selection Notes

Select this component when a fixed-time delay sequencer is sufficient for the application design. Compare the 2 ms delay specification against the target power rail ramp times to ensure adequate hold-up duration. Consider the SOT-23-6 footprint constraints during PCB layout. Evaluate if the open-drain output interface aligns with the receiving logic levels of the monitored circuits without requiring additional pull-up components.

Power Supply Controllers, Monitors Part Context

This device belongs to the LM3880 series of simple power supervisors designed for monitoring multiple voltage rails. It serves as a cost-effective alternative to complex programmable sequencers in applications where fixed timing is acceptable. The automotive qualification distinguishes it from commercial variants, ensuring robustness against thermal and electrical stresses common in vehicle environments.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other LM3880 variants with different delay times, such as LM3880QMF-1AF/NOPB (16 ms delay) or LM3880MFE-1AD/NOPB (120 ms delay), provided the timing requirements allow adjustment. Verify pin compatibility and package dimensions remain identical when swapping between these options.