LM4041CIM3-1.2

Overview

The LM4041CIM3-1.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It provides a fixed reverse breakdown voltage of 1.225 V with an initial accuracy of ±0.5% at 25°C. The device operates within a wide current range from 60 µA to 12 mA and features a maximum temperature coefficient of 150 ppm/°C. Designed for space-critical applications, it utilizes a sub-miniature SOT-23-3 surface-mount package. The component requires no external stabilizing capacitor and remains stable under any capacitive load.

Feature Summary

• Fixed 1.225 V output voltage with high precision
• Micropower operation suitable for battery-powered systems
• Capacitive load stability without external components

Applications

• Portable instrumentation requiring small form factors
• Battery-operated measurement devices
• Space-constrained electronic circuits

Procurement Notes

Verify that the specific ordering suffix matches the required tolerance grade and temperature range. Confirm the package type corresponds to the design requirements. Ensure the manufacturer source aligns with project specifications, as the component originates from the National Semiconductor lineage now managed by Texas Instruments.

Selection Notes

Select this component when a fixed 1.225 V reference is needed in a compact SOT-23 package. It is appropriate for designs prioritizing low power consumption and minimal board space. Consider the ±0.5% accuracy and 150 ppm/°C drift if higher precision or lower temperature coefficients are not strictly required.

Part Context

This part belongs to the LM4041-N series of precision shunt voltage references. The series includes adjustable versions and various fixed voltage options. The LM4041 variant specifically targets the 1.225 V output, distinguishing it from the LM4040 series which offers higher voltages like 2.5 V and 5.0 V.

Replacement Considerations

LM4041DIM3X-1.2/NOPB

FAQ

Does the LM4041CIM3-1.2 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 operating current range for this device?

The minimum operating current is 60 µA, and the maximum operating current is 12 mA.