LM4050CEM3X-5.0

Voltage Reference Overview

The LM4050CEM3X-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 industrial temperature range from -40°C to +85°C and utilizes a SOT-23 surface-mount package. The device guarantees an initial accuracy of ±0.5% at 25°C with a maximum temperature coefficient of 50 ppm/°C across the operating range. It supports a wide operating current range from a minimum of 74 μA to a maximum of 15 mA, ensuring stable performance under varying load conditions.

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
• Bandgap reference temperature drift curvature correction ensures stable voltage over wide temperature ranges

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Product testing

Voltage Reference Procurement Notes

Verify the specific suffix 'CEM3X' corresponds to the C-grade (±0.5%) tolerance and industrial temperature range (-40°C to +85°C). Confirm the 'X' indicates tape-and-reel packaging if reel quantity is required. Ensure the 5V output variant matches the system requirement, as other voltages exist in the family. Check for RoHS compliance status on the specific manufacturing lot.

Voltage Reference Selection Notes

Select this component when space is critical due to its small SOT-23 package size. It is suitable for applications requiring a fixed 5V reference without the complexity of adding output capacitors. The C-grade offers lower initial accuracy compared to A or B grades but provides cost-effective precision for general-purpose industrial applications where ±0.5% tolerance is acceptable.

Voltage Reference Part Context

This part belongs to the LM4050-N series of precision micropower shunt voltage references. The series includes multiple fixed reverse breakdown voltages such as 2.048 V, 2.5 V, 4.096 V, 8.192 V, and 10 V. The LM4050-N is designed for space-critical applications and is available in both industrial and extended temperature ranges, with the Q1 variant offering automotive qualification.

Voltage Reference FAQ

Does the LM4050CEM3X-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 maximum operating current for this device?

The maximum operating current is 15 mA.