LM4041QCIM3-1.2/NO

Voltage Reference Overview

The LM4041QCIM3-1.2/NO is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 1.225 V. It provides an initial accuracy of 0.5% and a temperature coefficient of 100 ppm/°C. The device operates within a wide current range from 60 µA to 12 mA and maintains stability with any capacitive load without requiring external components. It supports surface-mount installation in a SOT-23-3 package and functions reliably across an extended temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

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

Voltage Reference Applications

• Space-critical applications due to sub-miniature packaging
• Portable equipment requiring low quiescent current operation
• Battery-powered systems utilizing micropower shunt regulation

Voltage Reference Procurement Notes

Verify that the specific suffix 'Q' denotes the automotive-grade qualification (AEC-Q100) as indicated in the LM4041xQ family documentation. Confirm the 'I' suffix corresponds to the industrial temperature range (-40°C to +85°C) or extended range (-40°C to +125°C) based on the precise datasheet revision, as standard LM4041 variants may differ. Ensure the ordering part number matches the required accuracy grade and package type exactly.

Voltage Reference Selection Notes

Select this component when a fixed 1.225 V reference with 0.5% initial accuracy is required in a compact SOT-23-3 footprint. It is suitable for designs needing stability with capacitive loads without external compensation. Consider the AEC-Q100 qualification if automotive reliability standards are mandatory. Compare against other grades like A or B if tighter tolerance or lower temperature coefficients are necessary for the specific application.

Voltage Reference Part Context

This device belongs to the LM4041-N series of precision micropower shunt voltage references from Texas Instruments. The series offers both fixed and adjustable versions in SC-70 and SOT-23 packages. The LM4041-N is designed for portable applications, providing low noise and low temperature drift. The 'Q' variant typically indicates automotive qualification, while the 'C' often denotes commercial or industrial temperature ranges depending on the specific manufacturer coding conventions.

Voltage Reference Replacement Considerations

LM4041CIM3-1.2/NOPB: Commercial grade equivalent with similar electrical characteristics but potentially different temperature range qualifications.