LM4041AIM3-1.2+T

Overview

The LM4041AIM3-1.2+T is a precision micropower shunt voltage reference manufactured by Analog Devices (Maxim Integrated). It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.1% at +25°C and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60µA to 12mA, ensuring stable performance across varying loads. It features low output noise of 20µVRMS (10Hz to 10kHz) and does not require external stabilizing capacitors. The component is housed in a compact SOT-23-3 surface-mount package and is guaranteed to function over the industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-small 3-pin SOT-23 surface-mount package designed for space-critical applications
• High precision with 0.1% initial accuracy and bandgap temperature drift curvature correction
• Capacitive load stability without requiring external output capacitors
• Low dynamic impedance and wide operating current range for consistent regulation

Applications

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

Procurement Notes

Verify that the ordering suffix M3 corresponds specifically to the SOT-23-3 package configuration rather than the SC70-3 variant. Confirm the presence of the lead-free (+) designation to ensure RoHS compliance. Cross-reference the specific grade A tolerance requirements against the application's precision needs before finalizing procurement orders.

Selection Notes

Select this component when high precision and minimal board space are required. The 0.1% accuracy grade is suitable for sensitive analog circuits. Ensure the design accommodates the 12mA maximum shunt current limit. Verify that the SOT-23-3 package thermal characteristics meet the system's power dissipation requirements under worst-case operating conditions.

Part Context

This part belongs to the LM4041 family of improved precision micropower shunt voltage references. It shares core electrical specifications with other grades (B, C, D) but offers superior initial accuracy. The device utilizes laser-trimmed resistors to maintain precise voltage levels. It serves as a direct replacement for legacy Zener diodes in applications demanding higher stability and lower temperature coefficients.

Replacement Considerations

LM4041BIM3-1.2+T

FAQ

Does the LM4041AIM3-1.2+T require an external capacitor for stability?

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

What is the pin configuration for Pin 3 on this component?

Pin 3 is designated as N.C. (Not Connected) and must be left floating or connected to Pin 2.