LM4050BEM3X-5.0

Voltage Reference Overview

The LM4050BEM3X-5.0 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed reverse breakdown voltage of 5 V. It operates within an extended temperature range from -40°C to +125°C and utilizes a compact SOT-23 surface-mount package. The device guarantees an initial accuracy of ±0.2% at 25°C with a maximum temperature coefficient of 50 ppm/°C across the operating range. It supports a wide operating current range from 74 μA to 15 mA, ensuring stable performance without requiring external stabilizing capacitors.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while maintaining stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure high initial accuracy
• Features bandgap reference temperature drift curvature correction and low dynamic impedance

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Voltage Reference Procurement Notes

Verify the specific suffix 'X' against the official datasheet orderable addendum to confirm tape-and-reel packaging specifications. Ensure the B-grade tolerance matches the design requirements for the 5 V option. Confirm that the extended temperature range (-40°C to +125°C) aligns with the thermal environment of the target application before finalizing procurement.

Voltage Reference Selection Notes

Select this component when space-critical applications require a precise 5 V reference in a small SOT-23 package. The B-grade offers a balance of ±0.2% initial accuracy and 50 ppm/°C temperature coefficient suitable for general-purpose industrial and extended temperature environments. Consider the minimum operating current of 74 μA to ensure proper biasing in low-power circuits.

Voltage Reference Part Context

This part belongs to the LM4050-N family of precision micropower shunt voltage references. The family includes various fixed reverse breakdown voltages such as 2.048 V, 2.5 V, 4.096 V, 8.192 V, and 10 V. The LM4050-N series is designed for applications demanding high accuracy and stability in a miniature footprint, serving as a drop-in replacement for larger legacy voltage reference devices.

Voltage Reference Replacement Considerations

LM4050BIM3-5.0/NOPB

Voltage Reference FAQ

Does the LM4050BEM3X-5.0 require an external capacitor for stability?

No, the LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the initial accuracy grade for the LM4050BEM3X-5.0?

The 'B' designation indicates an initial reverse breakdown voltage tolerance of ±0.2% at 25°C.