LM4040CIM3X-2.5

Overview

The LM4040CIM3X-2.5 is a precision micropower shunt voltage reference manufactured by Texas Instruments, operating within an extended industrial temperature range of -40°C to +85°C. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.5% and a temperature coefficient of 100ppm/°C. The device functions as a two-terminal reference in a compact SOT-23 package, supporting a maximum cathode current of 15mA while maintaining low power consumption with a minimum operating current of 65µA.

Feature Summary

• Provides stable reference voltage with high precision and low temperature drift
• Operates efficiently at very low quiescent currents for battery-powered applications
• Designed for surface-mount integration in space-constrained circuit boards

Applications

• Portable instrumentation requiring precise analog references
• Battery-operated measurement systems
• Data acquisition systems needing stable voltage sources

Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering part number matches the required tolerance and temperature grade specifications for your design requirements.

Selection Notes

Select this component when a fixed 2.5V reference is needed with moderate precision requirements. It serves as a suitable alternative to higher-cost references where ±0.5% accuracy suffices. Consider the SOT-23 footprint constraints and thermal management needs for the specific application environment.

Part Context

This device belongs to the LM4040-N series of micropower shunt voltage references from Texas Instruments. It shares functional similarities with other members of the family but is distinguished by its specific 2.5V output voltage and industrial temperature rating. The series is widely used in general-purpose analog circuits requiring reliable voltage regulation.

Replacement Considerations

LM4040AIM3X-2.5/NOPB offers tighter initial accuracy (±0.1%) and lower temperature coefficient (150ppm/°C). LM4040DIM3X-2.5/NOPB provides automotive qualification (AEC-Q100) with slightly different accuracy specs.