LM4040AEX3-3.0+T

Overview

The LM4040AEX3-3.0+T is a precision micropower shunt voltage reference manufactured by Analog Devices / Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 3.0V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +125°C and features a maximum temperature coefficient of 100ppm/°C. It utilizes a subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm) and supports a shunt current range from 60µA to 15mA.

Feature Summary

• Ultra-small 3-pin SC70 package for space-critical applications
• High precision with 0.1% initial accuracy
• Stable operation without external stabilizing capacitors
• Capable of tolerating any capacitive load

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls
• Automotive systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm exact specifications such as temperature grade and package type. Ensure compatibility with RoHS compliance requirements if applicable to your design constraints. Cross-reference the part number with authorized distributor catalogs to validate current availability and sourcing channels before final procurement decisions.

Selection Notes

Select this component when high precision and minimal board space are required in portable or automotive designs. The 0.1% accuracy grade ensures tight tolerance control. Verify that the operating environment stays within the specified -40°C to +125°C range. Confirm that the circuit design maintains the shunt current between 60µA and 15mA for optimal performance and stability.

Part Context

This component belongs to the LM4040 family of improved precision micropower shunt voltage references. The family offers multiple fixed reverse-breakdown voltages including 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. Variants are available in both SOT23-3 and SC70-3 packages with different accuracy grades ranging from 0.1% to 1%.

Replacement Considerations

Direct substitutes include other LM4040 variants with matching voltage and accuracy, such as LM4040AIX3-3.0+T. For extended temperature ranges, verify AEC-Q100 qualified parts like those with /V suffixes if automotive reliability is required.