LM4050BEM3X-2.5/NOPB

Voltage Reference Overview

The LM4050BEM3X-2.5/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, housed in an SOT-23-3 surface-mount package. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.5%. The device features a temperature coefficient of 50 ppm/°C and supports a maximum shunt current of 15 mA. It operates within a temperature range of -40°C to +125°C and has a cathode current of 90 µA.

Voltage Reference Feature Summary

• Micropower operation with low cathode current consumption
• Precision shunt regulation with tight initial accuracy tolerance
• Compact SOT-23-3 surface-mount packaging for space-constrained designs

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Handheld meters and test equipment

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS status. Confirm the 'X' designation in the part number corresponds to the correct tape-and-reel packaging configuration. Ensure the source document explicitly lists this exact part number as active or available, as variations in suffixes may indicate different packaging or obsolete status.

Voltage Reference Selection Notes

Select this component when a compact, low-power shunt reference is required for precision applications. The 2.5 V output suits ADC/DAC references where moderate accuracy (±0.5%) is sufficient. Consider the 50 ppm/°C drift if operating across wide thermal ranges. Verify that the SOT-23-3 footprint matches the PCB layout constraints.

Voltage Reference Part Context

This part belongs to the LM4050 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The 'B' grade typically denotes ±0.5% initial accuracy, while 'Q' variants often carry automotive AEC-Q100 qualification. This specific model is a standard commercial-grade version in a reel package.

Voltage Reference Replacement Considerations

LM4050CEM3-2.5: Similar performance but potentially different initial accuracy grade (±0.5%). LM4050AEM3X-2.5/NOPB: Higher accuracy grade (±0.1%) with identical pinout and package.