LM4050BIX3-5.0

Voltage Reference Overview

The LM4050BIX3-5.0 is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 5.0V with an initial accuracy of 0.2%. The device features a maximum temperature coefficient of 50ppm/°C, ensuring stable performance across the industrial temperature range of -40°C to +125°C. It operates within a shunt current range of 60µA to 15mA and utilizes a compact SC-70 (SOT-323) surface-mount package.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure high initial accuracy
• Capacitor-free operation with stability under any capacitive load
• Low dynamic impedance maintains voltage accuracy over wide current ranges

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition systems
• Handheld devices with limited board space

Voltage Reference Procurement Notes

Verify the manufacturer designation on the component marking, as the LM4050 series has been produced by both Maxim Integrated and Texas Instruments following industry acquisitions. Confirm that the specific suffix matches the required accuracy grade and package type. Ensure compatibility with existing PCB footprints for the SC-70 package before procurement.

Voltage Reference Selection Notes

Select this component when a 5.0V reference is required in a minimal footprint. The 0.2% accuracy grade offers a balance between precision and cost. Verify that the application current stays within the 60µA to 15mA operating window to maintain specified noise and impedance characteristics. Consider thermal management if operating near the upper temperature limit.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of two-terminal shunt voltage references. The family offers multiple fixed voltage options including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The B-grade designation indicates 0.2% initial accuracy, while the IX3 suffix denotes the SC-70 package configuration.

Voltage Reference Replacement Considerations

LM4050BIM3X-5.0: Alternative from Texas Instruments using SOT-23 package with similar electrical specifications.