LM4040DEX3-3.0+T

Overview

The LM4040DEX3-3.0+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 3.000V with an initial accuracy of 1.0%. The device operates within a temperature range of -40°C to +125°C and features a maximum average reverse voltage temperature coefficient of 150ppm/°C at 1mA current. It supports a wide operating shunt current range from 60μA to 15mA.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package designed for space-critical applications
• Laser-trimmed resistors ensure precise initial accuracy across multiple grades
• Stable operation without requiring external stabilizing capacitors
• Capable of tolerating any capacitive load while maintaining stability

Applications

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

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm exact electrical parameters, temperature range, and package type. Confirm RoHS compliance status and lead-free requirements prior to procurement. Ensure the selected variant matches the required initial accuracy and temperature coefficient specifications for the target application environment.

Selection Notes

Select this component when a compact footprint is required alongside stable voltage referencing in power-constrained designs. The D-grade offers 1.0% accuracy suitable for general-purpose applications. Verify that the source resistance limits the shunt current below the 20mA absolute maximum rating under all supply voltage and load conditions.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The 'D' designation indicates a 1.0% initial accuracy grade, while 'EX3' specifies the extended industrial temperature range (-40°C to +125°C) and the SC70-3 package. The '+T' suffix denotes tape and reel packaging.

Replacement Considerations

LM4040DIM3-3.0+T (SOT23-3 package, same electrical specs)

FAQ

Does the LM4040DEX3-3.0+T require an external capacitor for frequency stability?

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

What is the maximum continuous power dissipation for the SC70 package?

The maximum continuous power dissipation is 235mW at TA = +70°C, with a derating value of 2.90mW/°C above +70°C.