LM4040D50IDCKRG4

Overview

The LM4040D50IDCKRG4 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%. The device operates within an extended temperature range from -40°C to +125°C and features a maximum temperature coefficient of 150ppm/°C. It utilizes a 5-pin SC-70 surface-mount package and requires a minimum cathode current of 45μA for stable operation.

Feature Summary

• Provides a fixed 5V reference output with tight manufacturing tolerances
• Operates reliably across an extended industrial temperature range up to 125°C
• Maintains stability with all capacitive loads without requiring external components

Applications

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

Procurement Notes

Verify the specific suffix 'RG4' against the manufacturer's latest Package Option Addendum to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the component grade matches the required thermal performance for your specific operating environment, as the 'Q' suffix typically denotes the extended temperature range while 'I' denotes the industrial range.

Selection Notes

Select this component when a fixed 5V reference is required in space-constrained designs utilizing the SC-70 footprint. It is suitable for applications demanding low power consumption with a minimum operating current of 45μA. Consider the D-grade specifications if the application can tolerate a 1% initial accuracy and a 150ppm/°C temperature coefficient rather than higher precision grades.

Part Context

This part belongs to the LM4040 series of shunt voltage references, which are designed for versatile use in portable and battery-powered applications due to their low current requirements. The series offers various fixed output voltages and accuracy grades, packaged in compact SOT-23 and SC-70 formats to facilitate efficient PCB layout in modern electronic devices.

Replacement Considerations

LM4040D50IDCKR

FAQ

Does the LM4040D50IDCKRG4 require an output capacitor?

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

What is the minimum cathode current required for proper regulation?

The typical minimum cathode current required for stable operation is 45μA.