LM4050QAIM3-4.1/NOPB

Voltage Reference Overview

The LM4050QAIM3-4.1/NOPB is a precision shunt voltage reference manufactured by Texas Instruments, designed for automotive and industrial applications. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 50 ppm/°C. Packaged in a compact SOT-23-3 surface-mount case, it supports a maximum shunt current of 15 mA and draws a typical cathode current of approximately 90 µA. The component holds AEC-Q100 qualification.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for sustained performance in demanding environments.
• High precision voltage regulation with tight initial accuracy tolerances suitable for sensitive measurement circuits.
• Low power consumption architecture optimized for battery-operated systems requiring minimal quiescent current.

Voltage Reference Applications

• Automotive sensor signal conditioning
• Data acquisition systems
• Portable instrumentation

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as /NOPB and packaging options like reel or cut tape. Confirm AEC-Q100 certification requirements match specific project standards. Check for lead time variations due to automotive supply chain constraints. Ensure compatibility with existing PCB footprints for SOT-23-3 packages. Validate operating temperature ranges against environmental specifications.

Voltage Reference Selection Notes

Select this component when high accuracy and automotive qualification are required in a small form factor. Compare initial accuracy and temperature coefficients against alternative references. Consider the maximum shunt current capability for load regulation needs. Evaluate power consumption limits for battery-powered designs. Verify package availability and reflow soldering profiles.

Voltage Reference Part Context

This device belongs to the LM4050 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The Q-series designation indicates automotive qualification. The AIM3 suffix specifies the SOT-23-3 package and material composition. The NOPB suffix denotes a lead-free and RoHS-compliant version.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4050 variants with different output voltages or accuracies, such as LM4050QAIM3-2.5/NOPB or LM4050QAIM3-5.0/NOPB. Cross-reference with LM4040 series for similar functionality. Verify pinout compatibility and thermal characteristics before substitution.

Voltage Reference FAQ

What is the maximum shunt current for the LM4050QAIM3-4.1/NOPB?

The maximum shunt current is 15 mA, allowing it to handle moderate load currents while maintaining regulation.

Is the LM4050QAIM3-4.1/NOPB qualified for automotive use?

Yes, the Q-prefix indicates that the device is qualified according to the AEC-Q100 standard for automotive applications.