LM4040DEX3-2.5+T

Overview

The LM4040DEX3-2.5+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 2.500V with an initial accuracy of 1.0%. The device features a maximum temperature coefficient of 150ppm/°C and operates within a temperature range of -40°C to +125°C. It supports a shunt current capability from 60μA to 15mA and utilizes a subminiature 3-pin SC70 surface-mount package.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific ordering suffixes against official manufacturer documentation to confirm exact electrical grades, temperature ranges, and packaging formats. Confirm RoHS compliance status and lead-free requirements prior to procurement. Ensure the selected variant matches the required initial accuracy and operating temperature 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 wide operating current range allows flexibility in source resistor selection. Verify that the 1.0% initial accuracy and 150ppm/°C temperature coefficient meet the system's tolerance requirements across the full industrial temperature range.

Part Context

This part belongs to the LM4040 series 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 both SOT23-3 and SC70-3 packages with different accuracy grades ranging from 0.1% to 1%.

Replacement Considerations

LM4040DIX3-2.5+T (SOT23-3 package equivalent)

FAQ

Does the LM4040DEX3-2.5+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and is guaranteed to be stable with any capacitive load.

What is the minimum operating current for the LM4040DEX3-2.5+T?

The minimum operating current is typically 70μA, with an absolute minimum guarantee of 45μA.