LM4050CEX3-2.5+T

Voltage Reference Overview

The LM4050CEX3-2.5+T is a precision two-terminal shunt-mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 2.500V with an initial accuracy of 0.5% and a maximum temperature coefficient of 50ppm/°C. The device operates within a wide current range from 60µA to 15mA and is housed in a subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm). It functions reliably over an operating temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Laser-trimmed resistors ensure excellent initial accuracy across multiple grades.
• Low dynamic impedance maintains stable reverse breakdown voltage accuracy over wide operating currents.
• No external stabilizing capacitor is required, ensuring stability with any capacitive loads.

Voltage Reference Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls

Voltage Reference Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance status. Confirm that the component matches the exact pin configuration and thermal characteristics required for the target PCB layout. Ensure the selected grade meets the necessary initial accuracy specifications for the application.

Voltage Reference Selection Notes

Select this component when space constraints require a compact 3-pin SC70 package while maintaining high precision. Consider the 0.5% initial accuracy grade if tighter tolerances are not critical. Evaluate the power dissipation limits at maximum load currents to ensure operation remains within the specified junction temperature limits.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of micropower shunt voltage references. The series offers various fixed reverse breakdown voltages including 1.225V, 2.048V, 3.000V, 3.3V, 4.096V, and 5.000V. Different accuracy grades ranging from 0.1% to 0.5% are available, along with options for SOT23 packaging.

Voltage Reference Replacement Considerations

LM4050CEM3-2.5+T (SOT-23 package variant)

Voltage Reference FAQ

Does the LM4050CEX3-2.5+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and is stable with any capacitive loads.

What is the function of Pin 3 on the SC70 package?

Pin 3 is a No Connection (N.C.) pin. It must be left unconnected or connected to Pin 2.