LM4040CIM3-2.5

Overview

The LM4040CIM3-2.5 is a precision micropower shunt voltage reference manufactured by Texas Instruments, part of the LM4040-N series. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.5% and a temperature coefficient of 100 ppm/°C. The device operates within a supply current range of 65 µA to 15 mA and functions across a temperature range of -40°C to +85°C. Packaged in a compact SOT-23-3 surface-mount case, it delivers low noise performance suitable for sensitive analog circuits.

Feature Summary

• Micropower operation with minimal quiescent current consumption
• High precision stability with tight initial accuracy tolerance
• Compact three-terminal surface-mount packaging

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable references
• Handheld meters and test equipment

Procurement Notes

Verify manufacturer origin as this component is produced by Texas Instruments despite the brand query. Confirm package type matches SOT-23-3 requirements. Check RoHS compliance status for specific revision codes. Ensure operating conditions align with the specified temperature range. Validate pinout configuration against schematic designs prior to integration.

Selection Notes

Select this component when a stable 2.5 V reference is required in space-constrained designs. The low power consumption makes it ideal for battery-operated applications. Consider the 100 ppm/°C drift if high thermal stability is critical. Verify that the shunt topology fits the circuit architecture compared to series regulators.

Part Context

This device belongs to the LM4040-N family of precision voltage references. It serves as a drop-in replacement for older two-terminal zener diodes in many applications. The series offers various voltage options and accuracy grades to suit different design needs while maintaining consistent form factors.

Replacement Considerations

LM4040BIM3-2.5+T offers improved precision specifications.