LM4040AIM3-4.1

Overview

The LM4040AIM3-4.1 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed reverse breakdown voltage of 4.096 V. It operates within an industrial temperature range of -40°C to +85°C and utilizes a SOT-23 surface-mount package. The device provides high accuracy with an initial tolerance of ±0.1% at 25°C and maintains stability across varying conditions through a maximum temperature coefficient of 100 ppm/°C. Designed for low power consumption, it requires a minimum operating current of 68 μA and supports a maximum cathode current of 15 mA.

Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes bandgap reference temperature drift curvature correction and low dynamic impedance for stable performance
• Employs fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure high accuracy

Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Precision audio components

Procurement Notes

Verify the specific suffix 'M3' corresponds to the SOT-23 package configuration required for your design. Confirm that the 'A' grade designation aligns with the necessary ±0.1% initial tolerance specifications. Ensure the 4.096 V output voltage matches the system requirements before finalizing procurement orders.

Selection Notes

Select this component when space-constrained designs require a precise voltage reference without external compensation components. The A-grade tolerance ensures high accuracy for sensitive analog circuits. Verify that the operating current range meets the power budget constraints of the application environment.

Part Context

This device belongs to the LM4040-N family of precision micropower shunt voltage references. The series offers various fixed voltage options and package types, including SC70 and TO-92. The LM4040-N-Q1 variant provides automotive qualification, whereas standard versions focus on industrial applications requiring compact footprints and high stability.

Replacement Considerations

LM4040BIM3-4.1/NOPB

FAQ

Does the LM4040AIM3-4.1 require an external capacitor for stability?

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

What is the maximum operating current for this device?

The maximum operating current is 15 mA.