LM4051BEX3-1.2+T

Voltage Reference Overview

The LM4051BEX3-1.2+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 1.225V with an initial accuracy of 0.2%. The device features a maximum temperature coefficient of 50ppm/°C and operates within a wide current range of 60µA to 15mA. It is housed in a subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm) and is guaranteed over the -40°C to +125°C temperature range.

Voltage Reference Feature Summary

• Laser-trimmed resistors ensure high initial accuracy without requiring external stabilizing capacitors.
• Capable of tolerating any capacitive load while maintaining stability across a wide operating current range.
• Utilizes a bandgap principle to maintain stable reverse breakdown voltage accuracy under varying temperatures.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and grade. Confirm RoHS compliance status through manufacturer declarations. Ensure the selected component matches the required initial accuracy and temperature coefficient specifications for the target application environment.

Voltage Reference Selection Notes

Select this component when space constraints require a subminiature 3-pin SC70 package. Choose based on the required 1.225V output and 0.2% initial accuracy grade. Consider the 60µA minimum operating current and 15mA maximum shunt current limits during circuit design to ensure proper regulation and power dissipation management.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of precision micropower shunt voltage references. The LM4051 variant specifically offers a 1.225V fixed reverse breakdown voltage. The 'B' designation indicates a 0.2% initial accuracy grade, while 'EX3' denotes the SC70-3 package configuration.

Voltage Reference Replacement Considerations

LM4051AEX3-1.2+T (0.1% accuracy)

Voltage Reference FAQ

Does the LM4051BEX3-1.2+T require an external capacitor for stability?

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

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

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