LM4040D25QDBZRG4

Overview

The LM4040D25QDBZRG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 15 mA. It utilizes a SOT-23-3 surface-mount package and is qualified for automotive applications under the AEC-Q100 standard.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability in vehicle electronics
• Precision voltage regulation with 1% initial accuracy ensuring stable reference performance
• Micropower operation capability supporting low standby current consumption requirements

Applications

• Automotive electronic control units requiring certified voltage references
• Portable battery-powered instrumentation systems
• Data acquisition channels needing stable analog reference voltages

Procurement Notes

Verify the specific suffix 'Q' confirms AEC-Q100 automotive qualification status. Confirm the 'G4' suffix indicates lead-free and RoHS compliance. Ensure the ordering part number matches the required temperature grade and accuracy tolerance before procurement.

Selection Notes

Select this component when automotive reliability certification is mandatory. The 2.5 V output suits single-supply ADC reference applications. Verify that the 15 mA maximum shunt current meets the circuit load requirements. Consider the SOT-23-3 package constraints for PCB layout space.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The D series denotes 1% accuracy, while the Q suffix indicates automotive qualification. It serves as a compact alternative to larger package references in space-constrained designs.

Replacement Considerations

LM4040D25IDBZRG4 offers identical electrical specifications but lacks automotive qualification. LM4040B25IDBZRG4 provides higher 0.2% accuracy without automotive certification.