LM4041BIX3-1.2+T

Overview

The LM4041BIX3-1.2+T is a precision two-terminal shunt voltage reference manufactured by Analog Devices / Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.2% 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 is housed in a subminiature 3-pin SC70 surface-mount package measuring 1.8mm x 1.8mm. The component is guaranteed to function over the industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical designs
• Laser-trimmed resistors ensure high initial accuracy without external calibration
• Stable operation with any capacitive load without requiring external stabilizing capacitors
• Low dynamic impedance maintains voltage accuracy across wide operating currents

Applications

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

Procurement Notes

Verify that the ordering suffix 'IX3' corresponds specifically to the SC70-3 package and '-40°C to +85°C' temperature range as defined in the official selector guide. Confirm that the '+T' suffix indicates tape-and-reel packaging if reel supply is required. Ensure the part number matches the lead-free/RoHS-compliant designation indicated by the '+' symbol. Cross-reference the manufacturer's latest documentation to confirm pinout compatibility and absolute maximum ratings before integration.

Selection Notes

Select this component when a compact footprint is required alongside high precision. The 0.2% initial accuracy grade offers a balance between cost and performance compared to tighter tolerance options. Verify that the application circuit can maintain the minimum 60µA shunt current for regulation. Consider the 100ppm/°C temperature coefficient for thermal stability requirements. Ensure the power dissipation limits are respected under maximum ambient temperatures and load conditions.

Part Context

This device belongs to the LM4041 family of micropower shunt voltage references. The family includes variants with different accuracies (0.1%, 0.5%, 1.0%) and temperature ranges (-40°C to +125°C). The 'B' grade denotes 0.2% initial accuracy. The 'I' suffix typically indicates the industrial temperature range. The 'X3' package code identifies the SC70-3 form factor. This specific part is designed for applications where size constraints and precision are critical.

Replacement Considerations

LM4041AIM3-1.2+T: Offers 0.1% accuracy in SOT23-3 package. LM4041BIM3-1.2+T: Same accuracy but in SOT23-3 package. LM4041CEX3-1.2+T: 0.5% accuracy in SC70-3 extended temperature range. LM4041DIX3-1.2+T: 1.0% accuracy in SC70-3 industrial range.