LM4041CIM3-1.2-TR

Voltage Reference Overview

The LM4041CIM3-1.2-TR is a precision micropower shunt voltage reference manufactured by Microchip Technology, housed in a 3-pin SOT-23 surface-mount package. It provides a fixed reverse-breakdown output voltage of 1.225 V at an operating current (IR) of 100 µA and 25 °C. The device features a C-grade initial accuracy tolerance of ±0.5% and a maximum average temperature coefficient of 100 ppm/°C. Operating currents range from a minimum of 60 µA to a maximum of 12 mA. The component operates within an ambient temperature range of -40 °C to +85 °C.

Voltage Reference Feature Summary

• Bandgap reference architecture with temperature drift curvature correction for stable performance across varying temperatures and currents
• Capable of tolerating capacitive loads without requiring an external stabilizing output capacitor
• Low dynamic impedance ensures consistent reverse-breakdown voltage accuracy under wide operating conditions

Voltage Reference Applications

• Battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Voltage Reference Procurement Notes

Verify the ordering suffix matches the required specifications. Confirm that the 'C' grade indicates the specific ±0.5% accuracy tolerance and 100 ppm/°C temperature coefficient. Ensure the '-TR' suffix aligns with reel packaging requirements. Cross-reference the manufacturer part number against official Microchip documentation to validate the exact electrical characteristics before procurement.

Voltage Reference Selection Notes

Select this component when a subminiature footprint is required for space-critical designs. Choose the LM4041CIM3-1.2-TR if the application demands a fixed 1.225 V reference with micropower consumption. Verify that the maximum operating current of 12 mA meets the circuit's power dissipation limits. Ensure the industrial temperature range (-40 °C to +85 °C) satisfies the environmental constraints of the target system.

Voltage Reference Part Context

This component belongs to the LM4040/LM4041 family of precision micropower shunt voltage references. While the LM4040 offers fixed voltages of 2.500 V, 4.096 V, and 5.000 V, the LM4041 variant specifically provides a fixed 1.225 V option or an adjustable version. Both share the same compact SOT-23 package and low-power design philosophy intended for portable and battery-operated electronics.

Voltage Reference Replacement Considerations

LM4041DIM3-1.2/NOPB

Voltage Reference FAQ

Does the LM4041CIM3-1.2-TR require an external capacitor for stability?

No, the device is designed to tolerate capacitive loads and does not require an external output capacitor for stable operation.

What is the maximum operating current for the LM4041-1.2 version?

The maximum operating current for the LM4041-1.2 version is 12 mA.