LM4040AEX3-5.0+T

Overview

The LM4040AEX3-5.0+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 5.000V with an initial accuracy of 0.1%. The device operates within an industrial temperature range of -40°C to +125°C and features a maximum average reverse voltage temperature coefficient of 100ppm/°C. It utilizes a subminiature 3-pin SC70 surface-mount package and supports a wide operating 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 high precision with 0.1% initial accuracy
• Stable operation without requiring external stabilizing capacitors across any capacitive load

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 package type, temperature grade, and compliance status. Confirm availability through authorized distributors as supply conditions may vary. Ensure the selected component matches the required electrical specifications for the target application environment.

Selection Notes

Select this component when a compact footprint and high precision are required in power-constrained designs. The wide operating current range allows flexibility in source resistor selection. Verify that the thermal dissipation limits are not exceeded at maximum ambient temperatures and load currents to maintain junction temperature within safe operating boundaries.

Part Context

This part belongs to the LM4040 family of improved precision micropower shunt voltage references. The series offers multiple fixed reverse-breakdown voltages including 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Variants are available in different accuracy grades and packages such as SOT23-3 and SC70-3 to suit various design constraints.

Replacement Considerations

Consult the manufacturer's ordering information table for direct pin-compatible alternatives within the LM4040 family. Consider variants with different accuracy grades or temperature ranges if system requirements change. Verify that any substitute maintains the same package outline and electrical characteristics.