LM4050BIX3-2.1

Voltage Reference Overview

The LM4050BIX3-2.1 is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 2.048V with an initial accuracy of 0.2%. The device features a maximum temperature coefficient of 50ppm/°C, guaranteed over the -40°C to +125°C operating temperature range. It operates within a wide current range from 60µA to 15mA and exhibits low dynamic impedance. The component is housed in a subminiature 3-pin SC-70 surface-mount package (1.8mm x 1.8mm), which is significantly smaller than comparable SOT-23 packages.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure high initial accuracy without external capacitors
• Stable performance across wide operating currents and temperatures
• Capable of tolerating capacitive loads directly

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'IX3' against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with SC-70 footprints. Confirm RoHS compliance status through the latest datasheet revision. Check for AEC-Q100 qualification if automotive grade is required, as standard versions may differ from qualified variants.

Voltage Reference Selection Notes

Select this component when a compact footprint is critical alongside precise voltage regulation. The 2.048V output suits ADC/DAC references requiring binary-compatible voltages. Consider the 50ppm/°C drift for thermal stability requirements. Verify that the 60µA minimum operating current fits the design's quiescent power budget constraints.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of precision two-terminal shunt-mode bandgap voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.500V, 3.000V, and 5.000V. The LM4050 variant typically denotes specific accuracy grades compared to the LM4051.

Voltage Reference Replacement Considerations

LM4050BIM3X-2.0: Alternative shunt reference with similar 2.048V output and 0.2% accuracy in SOT-23 packaging.