LM4050AIM3-2.5+

Voltage Reference Overview

The LM4050AIM3-2.5+ is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 2.5V with an initial accuracy of 0.1% and a temperature coefficient of 50ppm/°C. The device operates within a wide current range from 60µA to 15mA and functions across a temperature range of -40°C to +125°C. It is housed in a subminiature 3-pin SC-70 surface-mount package, measuring 1.8mm x 1.8mm.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 package for space-critical applications
• Laser-trimmed resistors ensure excellent initial accuracy
• Low dynamic impedance ensures stable reverse breakdown voltage accuracy
• No external stabilizing capacitor required while ensuring stability with any capacitive loads

Voltage Reference Applications

• Space-critical electronic designs requiring compact footprints
• Portable battery-powered equipment due to micropower characteristics
• Precision measurement systems requiring stable reference voltages
• Data acquisition systems needing accurate analog-to-digital conversion references

Voltage Reference Procurement Notes

Verify the manufacturer designation as Analog Devices Inc./Maxim Integrated on official documentation. Confirm the specific suffix indicates lead-free compliance if required by project specifications. Ensure the SC-70 package dimensions match the design constraints. Check for availability status as this component may be subject to lifecycle changes or obsolescence notices from the manufacturer.

Voltage Reference Selection Notes

Select this component when a small form factor is critical alongside high precision. The 0.1% initial accuracy and 50ppm/°C temperature coefficient make it suitable for applications demanding tight tolerance over a wide industrial temperature range. Consider the 60µA minimum operating current to ensure proper regulation in low-power circuits without excessive quiescent current draw.

Voltage Reference Part Context

This part belongs to the LM4050-N series of precision micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The LM4050 variant specifically utilizes the SC-70 package, which is approximately 50% smaller than comparable SOT-23 packages.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers include LM4050AIM3-2.5/NOPB.