LM4040D50ILP

Overview

The LM4040D50ILP 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 ±1% and a maximum temperature coefficient of 150ppm/°C. The device operates within an ambient temperature range of -40°C to +85°C and utilizes a TO-92 three-pin through-hole package. It requires a minimum cathode current of 45μA (typical) and supports a maximum continuous cathode current of 15mA.

Feature Summary

• Provides stable reference voltage without requiring external output capacitors
• Maintains low dynamic impedance and low noise for signal integrity
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort

Applications

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

Procurement Notes

Verify the specific suffix 'LP' corresponds to the TO-92 package configuration as indicated in official documentation. Confirm that the D grade designation aligns with the required 1% tolerance and 150ppm/°C temperature coefficient specifications for your design. Ensure the industrial temperature range (-40°C to +85°C) meets environmental requirements.

Selection Notes

Select this component when a fixed 5V reference is needed in a through-hole format. The D grade offers a balance of cost and performance suitable for general-purpose applications where tighter tolerances are not critical. Consider the 15mA maximum current capability for load driving requirements.

Part Context

This part belongs to the LM4040 series of shunt voltage references, which includes A, B, C, and D grades offering varying levels of accuracy. The series is designed for versatile use in portable and industrial applications due to its low power consumption and stability across wide operating currents and temperatures.

Replacement Considerations

LM4040D50QDBZR is listed as a recommended alternative by the manufacturer.