LM4041AEM3-1.2+T

Overview

The LM4041AEM3-1.2+T is a precision two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60µA to 12mA and features low dynamic impedance. It is housed in a subminiature 3-pin SOT23 surface-mount package and is guaranteed to function over the extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Ultra-small 3-pin SOT23 surface-mount package for space-critical designs
• High precision with 0.1% initial accuracy and laser-trimmed resistors
• Stable operation without external stabilizing capacitors across any capacitive load
• Low dynamic impedance ensuring stable reverse-breakdown voltage accuracy

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls

Procurement Notes

Verify that the ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) rather than the standard industrial range. Confirm the 'M3' suffix corresponds to the SOT23-3 package type as specified in the datasheet selector guide. Ensure the '+T' designation aligns with the required reel packaging format for automated assembly processes.

Selection Notes

Select this component when high precision (0.1%) is required in a compact footprint. The SOT23-3 package offers a 50% size reduction compared to comparable SOT23 devices. Verify that the operating current remains between 60µA and 12mA to maintain stability. Consider thermal derating if ambient temperatures approach the upper limit of 125°C due to power dissipation constraints.

Part Context

This part belongs to the LM4041 series of micropower shunt voltage references. The series includes variants with different accuracies (0.1%, 0.2%, 0.5%, 1.0%) and temperature ranges. The LM4041 utilizes a bandgap principle to produce a stable 1.225V output, making it suitable for applications requiring precise voltage regulation in small form factors.

Replacement Considerations

LM4041BEM3-1.2+T (0.2% accuracy)

FAQ

Does the LM4041 require an external capacitor for stability?

No, the LM4041 does not require an external stabilizing capacitor and is stable with any capacitive load.

What is the function of Pin 3 on the SC70/SOT23 package?

Pin 3 is designated as N.C. (No Connect) and must be left floating or connected to Pin 2.