LM4040CIM3X-5.0

Overview

The LM4040CIM3X-5.0 is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 5 V. It operates within an industrial temperature range of -40°C to +85°C and features a maximum initial accuracy of 1% with a temperature coefficient of 150 ppm/°C. The device supports a maximum shunt current of 15 mA and draws a typical operating supply current of 45 µA. Packaged in a compact SOT-23-3 surface-mount format, it is designed for precision applications requiring low power consumption.

Feature Summary

• Micropower operation with low quiescent current consumption
• Precision shunt regulation topology for stable reference output
• Compact three-terminal SOT-23 surface-mount package design

Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement circuits
• Microcontroller analog-to-digital converter references

Procurement Notes

Verify the specific suffix 'CIM3X' indicates tape-and-reel packaging configuration distinct from bulk or cut-tape variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required 5 V nominal output and 1% accuracy grade for the target application environment.

Selection Notes

Select this component when a fixed 5 V reference is required with moderate precision (1%) and low power constraints. The SOT-23-3 package suits space-limited designs. Consider higher accuracy grades if tighter tolerance than 1% is necessary, or alternative series if lower temperature coefficients are critical for the specific operational environment.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family offers various fixed voltage options and accuracy grades. The CIM3X designation specifies the industrial temperature range and reel packaging format, differentiating it from automotive or commercial variants within the same functional series.

Replacement Considerations

LM4040CEM3-5.0/NOPB provides similar functionality with potentially different packaging or accuracy specifications.