LM4040D25QDBZT

Overview

The LM4040D25QDBZT is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output 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 temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and requires a minimum operating current of 65 µA. The component is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Provides stable precision voltage reference performance suitable for demanding environments
• Designed for low power consumption applications through micropower operation
• Capable of maintaining specified electrical characteristics across extended industrial temperature ranges

Applications

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

Procurement Notes

Verify the specific suffix QDBZT against official Texas Instruments documentation to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure compatibility with required thermal management and PCB layout guidelines for the SOT-23-3 package before finalizing procurement orders.

Selection Notes

Select this component when a 2.5 V reference with 1% initial accuracy is required for high-temperature industrial applications. Consider the 150 ppm/°C temperature coefficient and 15 mA maximum current capability against circuit load requirements. Verify that the SOT-23-3 package dimensions fit the available board space constraints.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades. The 'D' indicates 1% accuracy, while the 'Q' suffix typically denotes automotive-grade qualification standards defined by the manufacturer.

Replacement Considerations

LM4040D25IDBZT