LM4041DIM3-ADJ

Voltage Reference Overview

The LM4041DIM3-ADJ is a precision micropower shunt voltage reference manufactured by Texas Instruments. It features an adjustable output range from 1.225 V to 10 V, set via external resistors. The device operates with a minimum current of 60 µA and a maximum cathode current of 12 mA. It offers initial accuracy grades up to ±0.1% (A grade) at 25°C, with temperature coefficients as low as 100 ppm/°C for higher grades. The component is housed in a SOT-23 package and functions without an external stabilizing capacitor, maintaining stability across all capacitive loads.

Voltage Reference Feature Summary

• Adjustable reverse breakdown voltage allows output setting between 1.225 V and 10 V using external resistors
• Eliminates need for external stabilizing capacitor while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown trim during wafer sort for high initial accuracy
• Bandgap reference temperature drift curvature correction ensures stable performance over wide operating ranges

Voltage Reference Applications

• Data acquisition systems
• Portable and battery-powered equipment
• Precision audio applications
• Process control instrumentation

Voltage Reference Procurement Notes

Verify the specific accuracy grade suffix (e.g., A, B, C, D) required for your design, as the base model number may not specify tolerance. Confirm the package type matches the schematic footprint, typically SOT-23 for this variant. Ensure the application circuit provides sufficient bias current above the minimum operating threshold to maintain regulation. Check for automotive qualification requirements if deploying in vehicle electronics, as standard and Q1 versions differ.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a precise, adjustable shunt reference. The SOT-23 package suits surface-mount layouts where board area is limited. Choose based on required accuracy grade; lower grades offer cost benefits while higher grades provide tighter tolerances. Verify that the system's quiescent current budget accommodates the minimum 60 µA requirement for proper operation.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision voltage references. The series includes fixed-output variants like the 1.225 V version and adjustable models. The family is designed for low-power applications, offering options in SC-70, SOT-23, and TO-92 packages. It serves as a drop-in replacement for older discrete zener diodes in precision monitoring circuits.

Voltage Reference Replacement Considerations

LM4041DEM3-1.2/NOPB

Voltage Reference FAQ

Does the LM4041DIM3-ADJ require an external capacitor for stability?

No, the advanced design eliminates the need for an external stabilizing capacitor and remains stable with any capacitive load.

What is the minimum operating current for this device?

The minimum operating current is 60 µA for the LM4041-N 1.2 and ADJ versions.