LM4040AIM3-2.5+T

Overview

The LM4040AIM3-2.5+T is a precision micropower shunt 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 0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60μA to 15mA and is guaranteed over the industrial temperature range of -40°C to +85°C. It utilizes a bandgap principle and features low dynamic impedance, ensuring stable performance without requiring external stabilizing capacitors.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical designs
• Laser-trimmed resistors ensure high initial accuracy
• Stable operation across a wide operating current range
• Capable of tolerating any capacitive load

Applications

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

Procurement Notes

Verify that the ordering suffix matches the required specifications exactly. Confirm the package type corresponds to the intended PCB footprint. Ensure the temperature grade aligns with the operational environment requirements. Check for lead-free compliance status if necessary. Validate the manufacturer identification against authorized distribution channels.

Selection Notes

Select this component when precise voltage referencing is required in compact electronic designs. Consider the specific accuracy grade and temperature coefficient needed for the application. Evaluate the power dissipation limits relative to the ambient operating conditions. Ensure the supply voltage and load current requirements fall within the specified operational 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, 3.000V, 3.3V, 4.096V, and 5.000V. Different accuracy grades are available to suit various precision requirements. The family supports both SOT23 and SC70 packages for flexible layout options.

Replacement Considerations

LM4040BIM3-2.5+T (0.2% accuracy)

FAQ

Does the LM4040 require an external capacitor for stability?

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

What is the minimum operating current for this reference?

The minimum operating current is 60μA, which ensures proper regulation and stable reverse breakdown voltage accuracy.