LM4050QCEM3X4.1/NOPB

Voltage Reference Overview

The LM4050QCEM3X4.1/NOPB is an automotive-grade precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.5%. The device features a temperature coefficient of 50 PPM/°C and supports a maximum shunt current of 15 mA. It operates within a junction temperature range of -40°C to +125°C and is housed in a compact SOT-23-3 surface-mount package.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Micropower operation suitable for battery-powered applications
• High precision shunt regulation with low temperature drift

Voltage Reference Applications

• Automotive electronic control units requiring stable reference voltages
• Precision analog-to-digital converter (ADC) reference inputs
• Portable instrumentation circuits demanding low power consumption

Voltage Reference Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure compatibility with your design requirements. Confirm that the component meets the necessary automotive quality standards for your intended application environment. Check for any recent product change notifications or lifecycle status updates from the manufacturer before finalizing procurement plans.

Voltage Reference Selection Notes

Select this component when an automotive-certified, low-power shunt reference is required. The 4.096 V output aligns with common ADC input ranges. Ensure the circuit design accommodates the 15 mA maximum shunt current limit. The SOT-23-3 package is ideal for space-constrained PCB layouts where thermal performance must be managed within the specified operating temperature range.

Voltage Reference Part Context

This part belongs to the LM4050-N/-Q1 family of precision voltage references. The 'Q' designation indicates automotive grade qualification. The 'EM3' suffix specifies the SOT-23-3 package type. The '4.1' denotes the 4.096 V output voltage variant. The '/NOPB' indicates a lead-free, halogen-free finish compliant with RoHS directives.

Voltage Reference Replacement Considerations

Direct substitutes within the same family include LM4050CIM3X-4.1/NOPB for industrial grade or LM4050QAEM3X4.1/NOPB for higher 0.1% accuracy automotive grade. Verify pinout compatibility and thermal characteristics when cross-referencing with other manufacturers' shunt references.