LM4040C25QDBZTG4

Overview

The LM4040C25QDBZTG4 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 ±0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150 PPM/°C. It is housed in a SOT-23-3 surface-mount package. The component supports a maximum shunt current of 15 mA and requires a minimum operating current of 75 µA.

Feature Summary

• Provides stable 2.5 V reference voltage with high initial accuracy
• Operates across extended industrial temperature ranges
• Designed for low power consumption applications

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition circuits

Procurement Notes

Verify the Q suffix indicates automotive qualification requirements if applicable to your design. Confirm the DBZT suffix corresponds to the specific SOT-23-3 tape and reel packaging configuration. Ensure compatibility with RoHS directives and check for any end-of-life notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a 2.5 V reference with ±0.5% tolerance is required in a compact SOT-23-3 package. Consider the 150 PPM/°C temperature coefficient for thermal stability needs. Verify that the 75 µA minimum current draw fits within your circuit's quiescent power budget and that the 15 mA maximum shunt current capability meets load regulation requirements.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The C25 designation specifies the 2.5 V output variant, while the Q suffix typically denotes automotive grade qualification. The DBZT suffix identifies the SOT-23-3 surface-mount package with tape-and-reel delivery. This series offers a balance of precision and low power consumption for space-constrained designs.

Replacement Considerations

Check for LM4040C25IDBZTG4 for commercial grade equivalent. Verify LM4040C25MDBZTG4 for military grade options if available. Consult official substitution guides for pin-compatible alternatives with similar electrical characteristics.