LM4040DIMX-5.0

Overview

The LM4040DIMX-5.0 is a micropower shunt voltage reference manufactured by National Semiconductor, now Texas Instruments. It provides a fixed output voltage of 5.0 V with an initial accuracy of ±1%. The device operates within an industrial temperature range of -40°C to +85°C and features a maximum temperature coefficient of 150 ppm/°C. It utilizes the SOT-23 surface-mount package for compact integration.

Feature Summary

• Provides stable 5.0 V reference output
• Operates in industrial temperature environments
• Designed for space-constrained PCB layouts

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller power supply monitoring

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments on the component marking. Confirm the suffix 'IMX' corresponds to the SOT-23 package and tape-and-reel delivery format. Ensure the specific grade matches the required 1% accuracy and 150 ppm/°C temperature coefficient specifications for your design.

Selection Notes

Select this component when a low-cost, 5V reference is needed for non-critical applications requiring ±1% tolerance. It is suitable for designs where the 150 ppm/°C drift is acceptable compared to higher precision alternatives like the A or B grades. Verify that the SOT-23 footprint aligns with the board layout constraints.

Part Context

This part belongs to the LM4040 family of micropower shunt references. The 'DI' suffix indicates the 1% accuracy grade and industrial temperature range (-40°C to +85°C). The 'M' denotes the SOT-23 package, while 'X' typically signifies tape-and-reel packaging. This distinguishes it from higher precision variants (A/B) or wider temperature range versions.

Replacement Considerations

LM4040DIM3-5.0/NOPB: Direct equivalent from Texas Instruments with identical electrical characteristics and pinout.