LM4128DMF-2.5

Voltage Reference Overview

The LM4128DMF-2.5 is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1% and a temperature coefficient of 75 ppm/°C. The device operates within an input voltage range up to 6 V and supports a maximum shunt current of 20 mA. It functions reliably across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Features low power consumption characteristics suitable for battery-operated or energy-efficient designs.
• Utilizes a compact SOT-23-5 package to facilitate space-constrained printed circuit board layouts.

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition systems

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct output voltage and tolerance grades. Confirm RoHS compliance status and packaging options such as tape-and-reel quantities match project requirements. Cross-reference manufacturer part numbers to avoid confusion with similar variants in the LM4128 family.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference with 0.1% accuracy is required in a small footprint. Ensure the application current does not exceed the 20 mA shunt limit. Consider thermal management if operating near the upper temperature extremes. Verify that the 75 ppm/°C drift meets system stability specifications over the full operating range.

Voltage Reference Part Context

This device belongs to the LM4128 series of micropower series voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades packaged in SOT-23 formats. It serves as a standard reference solution for general-purpose analog applications where size and power efficiency are critical design constraints.

Voltage Reference Replacement Considerations

LM4128DMFX-2.5/NOPB