LM4050AIM3X-4.1

Voltage Reference Overview

The LM4050AIM3X-4.1/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed reverse breakdown voltage of 4.096 V. It provides an initial accuracy of ±0.1% at 25°C and maintains a maximum temperature coefficient of 50 ppm/°C across the extended industrial range of -40°C to +125°C. The device operates within a wide current range from 73 μA to 15 mA, utilizing a compact SOT-23 surface-mount package.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort for high accuracy
• Bandgap reference design ensures stable performance over wide operating temperatures and currents

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Product testing

Voltage Reference Procurement Notes

Verify that the ordering suffix 'NOPB' indicates lead-free status and confirms compliance with RoHS directives as specified in official documentation. Ensure the specific grade 'A' matches the required ±0.1% tolerance for your application. Confirm the package type is SOT-23 and check for automotive qualification requirements if applicable, as standard versions differ from Q1 grades.

Voltage Reference Selection Notes

Select this component when space constraints require a subminiature SOT-23 package without sacrificing precision. The A-grade designation is critical for applications demanding tight initial accuracy limits. Consider the minimum operating current of 73 μA for low-power designs and verify that the 15 mA maximum shunt current capability meets the circuit's load regulation needs.

Voltage Reference Part Context

This part belongs to the LM4050-N family of precision micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 2.048 V, 2.5 V, 5 V, 8.192 V, and 10 V. The LM4050-N-Q1 variant exists for automotive applications, but the standard LM4050-N is designed for general industrial use.

Voltage Reference Replacement Considerations

LM4050CIM3X-4.1/NOPB (0.5% accuracy)

Voltage Reference FAQ

Does the LM4050AIM3X-4.1 require an external capacitor?

No, the LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the minimum operating current for the 4.1V option?

For the 4.096 V option, the minimum operating current is typically 68 μA at 25°C and increases to 78 μA across the extended temperature range.