LM4040DIZ-5.0

Overview

The LM4040DIZ-5.0 is a micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 5.0 V with an initial accuracy of ±1%. The device features a maximum temperature coefficient of 150 ppm/°C and supports a maximum shunt current of 15 mA. It operates within an industrial temperature range from -40 °C to +85 °C and utilizes a TO-92-3 package.

Feature Summary

• Provides stable precision voltage reference in a compact through-hole package
• Designed for low power consumption applications with minimal operating current
• Maintains high stability across varying load conditions and capacitive loads

Applications

• Portable battery-powered equipment requiring precise voltage regulation
• Series regulator circuits utilizing the reference as a control element
• Adjustable power supply designs requiring accurate output voltage setting

Procurement Notes

Verify that the component matches the specific National Semiconductor or Texas Instruments manufacturing origin. Confirm the package type is TO-92-3 and the suffix indicates the correct 5.0 V output variant. Ensure the temperature grade aligns with industrial requirements (-40°C to +85°C). Check for lead-free compliance if required by project specifications.

Selection Notes

Select this component when a low-cost, through-hole voltage reference is needed for general-purpose applications. The 1% accuracy and 150 ppm/°C temperature coefficient suit designs where extreme precision is not critical. Consider the TO-92 package for prototyping or space-available PCB layouts. Evaluate the 15 mA current limit against circuit load requirements.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The series offers various output voltages and accuracy grades, including A (0.1%), B (0.2%), C (0.5%), and D (1%). The LM4040DIZ-5.0 represents the lower accuracy tier suitable for cost-sensitive designs while maintaining stability over the industrial temperature range.

Replacement Considerations

LM4040BIZ-5.0/NOPB: Offers higher accuracy (0.2%) and better temperature coefficient (100 ppm/°C) in the same package.