LM4040AIM3-5.0

Overview

The LM4040AIM3-5.0 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed 5 V output and ±0.1% initial accuracy at 25°C. It operates within an industrial temperature range of -40°C to +85°C with a maximum temperature coefficient of 100 ppm/°C. The device utilizes a subminiature SOT-23 surface-mount package and requires no external stabilizing capacitor while tolerating capacitive loads.

Feature Summary

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

Applications

• Portable, Battery-Powered Equipment
• Data Acquisition Systems
• Instrumentation
• Process Controls
• Automotives

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm exact tolerance grades and temperature ranges. Confirm that the component matches the required AEC-Q100 grade if automotive applications are intended. Ensure the package type aligns with PCB layout constraints before finalizing procurement decisions.

Selection Notes

Select this component when space-critical applications require a precise voltage reference in a small SOT-23 package. It is suitable for designs needing stability with capacitive loads without additional components. Consider the 100 ppm/°C temperature coefficient and ±0.1% initial accuracy for high-precision requirements.

Part Context

This part belongs to the LM4040-N series of precision micropower shunt voltage references from Texas Instruments. The series offers various fixed reverse breakdown voltages and multiple tolerance grades. It is designed for applications where low power consumption and high accuracy are critical.

Replacement Considerations

Consult the official datasheet for recommended alternates or direct replacements. Verify compatibility regarding pinout, package dimensions, and electrical specifications such as operating current range and temperature coefficient.