LM4128BMFX-2.5

Voltage Reference Overview

The LM4128BMFX-2.5 is a 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 0.2%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 20 mA. It supports a maximum input voltage of 6 V and exhibits a temperature coefficient of 75 ppm/°C.

Voltage Reference Feature Summary

• Provides stable precision voltage regulation suitable for sensitive analog circuits
• Designed for low power consumption applications requiring minimal quiescent current
• Capable of maintaining performance across extended industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation systems requiring precise voltage standards
• Battery-powered measurement devices needing efficient power management
• Data acquisition systems utilizing analog-to-digital converters

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure compatibility with required accuracy and temperature grades. Confirm RoHS compliance status and packaging options such as tape-and-reel quantities before finalizing procurement orders to match production requirements.

Voltage Reference Selection Notes

Select this component when a compact footprint and low power operation are critical alongside moderate precision requirements. Evaluate the trade-off between the 0.2% initial accuracy and the 75 ppm/°C temperature coefficient against stricter alternatives if higher stability is needed for the specific application environment.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades, all sharing a common low-power architecture and small SOT-23 form factor designed for space-constrained electronic designs.

Voltage Reference Replacement Considerations

Check for LM4128 variants with different output voltages or accuracy grades within the same family. Verify pinout compatibility and thermal characteristics when substituting with other manufacturers' precision references.