LM4040D30QDBZR

Overview

The LM4040D30QDBZR is a fixed shunt voltage reference IC from Texas Instruments, providing a nominal output of 3 V. It features an initial accuracy of ±1% and operates within a temperature range of -40°C to +125°C. The device utilizes a SOT-23-3 surface-mount package and draws a minimum cathode current of 65 µA with a maximum shunt current of 15 mA.

Feature Summary

• Provides stable 3 V reference via shunt topology
• Operates across extended industrial temperature range
• Suitable for precision analog circuit applications

Applications

• Precision measurement systems
• Data acquisition circuits
• Portable instrumentation

Procurement Notes

Verify the specific suffix QDBZR against official datasheets to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement orders.

Selection Notes

Select this component when a 3 V reference with ±1% tolerance is required in a compact SOT-23-3 package. Consider the extended temperature range and shunt current limits relative to the application's power budget and load conditions.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. It offers high stability and low noise characteristics suitable for demanding analog applications requiring reliable voltage regulation without active feedback loops.

Replacement Considerations

LM4040D30DBZR