LM4050AIM3-2.1+

Voltage Reference Overview

The LM4050AIM3-2.1+ is a precision two-terminal shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 2.1V with an initial accuracy of 0.1%. The device features a maximum temperature coefficient of 50ppm/°C, guaranteed over an operating temperature range of -40°C to +125°C. It operates within a wide shunt current range from 60µA to 15mA and exhibits low dynamic impedance. The component is housed in a subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm), which is approximately 50% smaller than comparable SOT23 packages.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical applications
• High initial accuracy of 0.1% ensured by laser-trimmed resistors
• Wide operating current range from 60µA to 15mA with low dynamic impedance
• No external stabilizing capacitor required while tolerating capacitive loads

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix and manufacturer designation when sourcing, as the LM4050 series has been produced by Maxim Integrated, Texas Instruments, and National Semiconductor. Confirm RoHS compliance status and ensure the SC70 package footprint matches the design layout. Check for AEC-Q100 qualification if automotive grade requirements are necessary, as this varies by specific ordering code.

Voltage Reference Selection Notes

Select this component for designs requiring high precision in minimal board space. The 0.1% accuracy and 50ppm/°C temperature coefficient make it suitable for sensitive analog circuits. Ensure the circuit can support the minimum 60µA shunt current for stable regulation. The SC70 package offers significant size reduction compared to SOT23 alternatives without compromising electrical performance.

Voltage Reference Part Context

The LM4050 series comprises precision micropower shunt voltage references available in multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. These devices utilize bandgap reference technology and are designed for applications demanding stability across wide temperature ranges and current variations.

Voltage Reference FAQ

Does the LM4050 require an external capacitor for stability?

No, the LM4050 does not require an external stabilizing capacitor and ensures stability with any capacitive loads.

What is the operating temperature range for the LM4050AIM3-2.1+?

The specifications are guaranteed over a temperature range of -40°C to +125°C.