LM4128DMFX-2.5

Voltage Reference Overview

The LM4128DMFX-2.5 is a micropower series voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.5%. The device operates within a supply voltage range up to 6 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 75 ppm/°C and functions reliably across an extended industrial temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-5 surface-mount package.

Voltage Reference Feature Summary

• Provides stable precision voltage reference output
• Designed for low power consumption applications
• Operates over extended industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition circuits

Voltage Reference Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix indicates the 2.5V output variant and SOT-23-5 packaging. Ensure compliance with RoHS directives if required for the target assembly process.

Voltage Reference Selection Notes

Select this component when a precise 2.5V reference is required in space-constrained designs. The SOT-23-5 package offers a small footprint suitable for portable electronics. Consider the 75 ppm/°C drift specification against application thermal stability requirements.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references. The family includes various output voltages and accuracy grades. The DMFX suffix denotes the specific tape-and-reel packaging format for automated assembly processes.

Voltage Reference Replacement Considerations

LM4128DMFX-2.5/NOPB serves as a direct equivalent replacement within the same product line.