LM4040AIX3-3.0+T

Overview

The LM4040AIX3-3.0+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 3.000V with an initial accuracy of 0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60μA to 15mA and is housed in a subminiature 3-pin SC70 surface-mount package measuring 1.8mm x 1.8mm. It is guaranteed over the industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-small 3-pin SC70 package designed for space-critical applications
• High precision with 0.1% maximum initial accuracy
• Stable operation without requiring 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 that the specific part number matches the required electrical specifications, including the 3.000V output, 0.1% accuracy grade, and SC70 package type. Confirm the operating temperature range aligns with the design requirements (-40°C to +85°C). Ensure compliance with lead-free/RoHS standards as indicated by the suffix. Cross-reference the manufacturer's ordering information to validate availability and correct pin configuration.

Selection Notes

Select this component when high precision and minimal board space are critical constraints. The 0.1% accuracy grade ensures tight tolerance control at room temperature. Verify that the application circuit maintains the shunt current between 60μA and 15mA for optimal regulation. Consider thermal derating if operating near the upper temperature limit or under high power dissipation conditions.

Part Context

This component belongs to the LM4040 family of improved precision micropower shunt voltage references. The 'AI' designation indicates the 0.1% accuracy grade and SC70 package variant. The 'X3' suffix specifies the SC70-3 package code, while 'I' denotes the industrial temperature range. This series offers multiple fixed voltage options and accuracy grades to suit various design needs.

Replacement Considerations

Direct substitutes include other LM4040 variants with matching voltage and accuracy, such as LM4040AIM3-3.0+T (SOT23-3 package) or LM4040BIX3-3.0+T (0.2% accuracy). Ensure the replacement maintains the same package footprint and electrical characteristics. Verify temperature range compatibility if the application requires extended operating conditions.