LM3881MMX/NOPB

Power Supply Controllers, Monitors Overview

The LM3881MMX/NOPB is a simple power sequencer manufactured by Texas Instruments, designed for managing the startup and shutdown sequences of multiple voltage rails in electronic systems. It operates within a supply voltage range of 2.7 V to 5.5 V and draws a typical supply current of 80 µA. The device features adjustable time delays to control the order of power rail activation. It is housed in an 8-VSSOP surface-mount package with dimensions of 3.1 mm in length and 1.1 mm in height. The component supports an operating temperature range from -40°C to +125°C and complies with RoHS standards.

Power Supply Controllers, Monitors Feature Summary

• Provides precise sequencing of multiple power rails through adjustable time delays
• Operates with low supply current consumption suitable for battery-powered applications
• Features robust performance across extended industrial temperature ranges

Power Supply Controllers, Monitors Applications

• Power sequence generation in portable electronics
• Voltage rail management in embedded systems
• Startup control for complex mixed-signal circuits

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to ensure compatibility with required packaging options such as tape and reel quantities. Confirm that the 8-VSSOP package variant matches the PCB footprint requirements. Check for any recent product change notifications regarding material composition or manufacturing location updates to maintain supply chain consistency and regulatory compliance.

Power Supply Controllers, Monitors Selection Notes

Select this component when a dedicated hardware solution for power sequencing is required without the complexity of programmable logic. Consider the fixed delay characteristics and the single-channel nature of the device relative to system timing requirements. Evaluate the low quiescent current benefit against other PMIC solutions if power efficiency is a critical design constraint for the target application environment.

Power Supply Controllers, Monitors Part Context

This part belongs to the LM3881 series of supervisory circuits from Texas Instruments. It is functionally related to the LM3881MMX-NOPB variant, which shares similar core sequencing capabilities. The series addresses the need for reliable power-up and power-down management in systems where incorrect sequencing could lead to latch-up or improper initialization of integrated circuits.

Power Supply Controllers, Monitors Replacement Considerations

The LM3881MMX-NOPB is a confirmed substitute part number with identical functional specifications.