LM4128BMF-2.5

Voltage Reference Overview

The LM4128BMF-2.5/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, housed in a compact 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 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.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Operates at ultra-low quiescent current levels suitable for battery-powered and energy-efficient applications.
• Provides stable reference performance over wide temperature variations without requiring external compensation components.

Voltage Reference Applications

• Portable instrumentation requiring low power consumption
• Battery-operated measurement devices
• Data acquisition systems needing stable reference voltages

Voltage Reference Procurement Notes

Verify the complete ordering part number including suffixes such as /NOPB or specific packaging codes like MFX when sourcing. Confirm that the selected variant matches the required accuracy grade and temperature coefficient specifications for your design. Ensure compatibility with standard SOT-23-5 footprints during PCB layout verification.

Voltage Reference Selection Notes

Select this component when a small form factor and low current draw are critical alongside precise voltage stability. Compare against other series options if higher current capacity or different voltage outputs are needed. Consider thermal management requirements given the small package size and potential power dissipation under maximum load conditions.

Voltage Reference Part Context

This device belongs to the LM4128 family of precision micropower shunt references designed for space-constrained applications. It serves as a drop-in replacement for older generation references while offering improved accuracy and lower power consumption. The series is widely used in industrial and consumer electronics where reliable voltage referencing is essential.

Voltage Reference Replacement Considerations

LM4128BMF-2.5/NOPB is functionally equivalent to LM4128BMF-2.5. Verify pinout compatibility and electrical parameters before substituting with other manufacturers' parts.