LM4050BEM3X-2.5

Voltage Reference Overview

The LM4050BEM3X-2.5 is a precision micropower shunt voltage reference manufactured by Texas Instruments, continuing the National Semiconductor lineage. It provides a fixed reverse breakdown voltage of 2.5V with an initial accuracy of 0.1% and a maximum temperature coefficient of 50ppm/°C guaranteed over the -40°C to +125°C range. The device operates within a shunt current range of 60µA to 15mA and features low dynamic impedance without requiring external stabilizing capacitors. It is housed in a compact SOT-23 surface-mount package.

Voltage Reference Feature Summary

• Ultra-small 3-pin SOT-23 surface-mount package for space-critical designs
• Laser-trimmed resistors ensure high initial accuracy stability
• Capacitor-free operation ensuring stability with any capacitive load
• Wide operating current range supporting diverse circuit requirements

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Telecommunications equipment
• Automotive electronics

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as the part originates from National Semiconductor but is now produced under Texas Instruments. Confirm the specific suffix 'NOPB' indicates lead-free compliance if required by your assembly process. Ensure the ordering code matches the exact voltage grade and package variant needed for your schematic.

Voltage Reference Selection Notes

Select this component when a stable 2.5V reference is required in a minimal footprint. The 0.1% accuracy grade suits applications demanding tight tolerance without complex calibration. Consider the 60µA minimum current requirement to ensure proper regulation during low-power standby modes in portable devices.

Voltage Reference Part Context

This device belongs to the LM4050 family of two-terminal shunt references. It shares core specifications with other variants like the LM4050AIM3-2.5 but differs in packaging and manufacturing origin. The family offers multiple voltage options including 1.225V, 2.048V, and 5.000V, all sharing the same low-noise, high-stability architecture designed for precision analog circuits.

Voltage Reference Replacement Considerations

Public documentation lists the LM4050BEM3-2.5/NOPB as a direct alternate or equivalent part number. Verify pinout compatibility and thermal characteristics before substitution.