LM4040B25IDBZR

Overview

The LM4040B25IDBZR 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 ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and requires a minimum cathode current of 75 µA for regulation. Packaged in a compact SOT-23-3 surface-mount case, it is designed for applications requiring stable voltage references in space-constrained environments.

Feature Summary

• Provides a fixed 2.5 V reference output with high initial accuracy.
• Operates as a two-terminal shunt reference device.
• Designed for low-power applications with micropower consumption characteristics.

Applications

• Portable instrumentation
• Battery-powered systems
• Data acquisition systems

Procurement Notes

Verify the specific suffix IDBZR corresponds to the standard SOT-23-3 tape and reel packaging configuration. Confirm that the B grade designation aligns with the required ±0.2% initial accuracy specification for your design. Ensure the operating temperature range of -40°C to +85°C meets your environmental requirements. Check RoHS compliance status if restricted substances are a concern for your manufacturing process.

Selection Notes

Select this component when a 2.5 V reference is needed with tighter tolerance than the C grade but without the extreme precision of the A grade. Consider the 150 ppm/°C temperature coefficient against your system's thermal stability needs. Evaluate the 75 µA minimum current requirement to ensure adequate biasing in your circuit design while maintaining low power consumption.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family offers various output voltages and accuracy grades (A, B, C) packaged in small form factors like SOT-23 and SC-70. The LM4040 series is widely used in industrial and consumer electronics where stable voltage references are critical for analog signal processing and measurement tasks.

Replacement Considerations

LM4040B25IDBZRG4 is a verified equivalent variant within the same product line.