LM4040C50ILPR

Overview

The LM4040C50ILPR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy tolerance of ±0.5%. The device operates within an ambient temperature range of -40°C to 85°C and features a maximum average temperature coefficient of 100ppm/°C. It utilizes a TO-92 package with three pins, supporting a cathode current range from a minimum of 45μA up to 15mA.

Feature Summary

• Maintains stable output voltage across wide operating currents and temperatures due to low dynamic impedance and low noise characteristics.
• Operates without external capacitors for stability while remaining compatible with all capacitive loads.
• Achieves tight output tolerances through fuse and Zener-zap reverse breakdown voltage trim during wafer sort.

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters

Procurement Notes

Verify the specific suffix 'ILPR' against the manufacturer's latest Package Option Addendum to confirm the exact physical dimensions and pinout configuration for the TO-92 variant. Ensure the C-grade designation matches the required 0.5% initial accuracy specification for the target application environment.

Selection Notes

Select this component when a fixed 5V reference is required in industrial environments characterized by temperatures between -40°C and 85°C. The C-grade offers a balance of cost and performance with 0.5% accuracy. Consider the Q-grade if extended temperature operation up to 125°C is necessary.

Part Context

This part belongs to the LM4040 series of shunt voltage references designed for versatile, easy-to-use applications. The series includes A, B, C, and D grades offering varying levels of accuracy and temperature coefficients. The LM4040C50ILPR specifically targets industrial applications requiring reliable voltage referencing in compact through-hole packages.

Replacement Considerations

LM4040C50QILPR (Extended Temperature Range)

FAQ

Does the LM4040C50ILPR require an output capacitor?

No, the device does not require an external capacitor for operation and is stable with all capacitive loads.

What is the minimum cathode current required for operation?

The typical minimum cathode current is 45μA at 25°C, increasing to 80μA across the full industrial temperature range.