LM4041CIM3-1.2-T

Voltage Reference Overview

The LM4041CIM3-1.2-T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.5% 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 for stable performance across varying temperatures and currents. It is housed in a subminiature 3-pin SC70 surface-mount package, measuring 1.8mm x 1.8mm, which is 50% smaller than comparable SOT23 packages. The component is guaranteed to operate over the industrial temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC70 surface-mount package designed for space-critical applications
• Laser-trimmed resistors ensure precise initial accuracy without requiring external capacitors
• Stable operation with any capacitive load due to internal design eliminating the need for output stabilization components

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the ordering suffix matches the required temperature grade and package type. Confirm RoHS compliance status as indicated by specific suffixes. Ensure the selected part number corresponds to the desired initial accuracy grade (e.g., C grade for 0.5%). Cross-reference the manufacturer's official documentation for lead-free packaging details and pin configuration requirements before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a compact footprint is critical, as the SC70 package offers significant size reduction compared to standard SOT23 alternatives. Consider the 0.5% initial accuracy and 100ppm/°C temperature coefficient for applications requiring moderate precision. Verify that the operating current remains within the 60µA to 12mA range to maintain stability. Evaluate thermal constraints if operating near the upper temperature limits.

Voltage Reference Part Context

This component belongs to the LM4041 series of improved precision micropower shunt voltage references. The series utilizes bandgap principles to generate a stable 1.225V output. Variants are available in different accuracy grades (A, B, C, D) and temperature ranges (industrial and extended). The LM4041 family is designed to replace larger discrete Zener diodes or other voltage references in space-constrained designs.

Voltage Reference Replacement Considerations

LM4041AIM3-1.2+T

Voltage Reference FAQ

Does the LM4041 require an external stabilizing capacitor?

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 package?

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