LM4050QAIM3X2.5/NOPB

Voltage Reference Overview

The LM4050QAIM3X2.5/NOPB is a micropower shunt voltage reference IC manufactured by Texas Instruments, housed in an SOT-23-3 surface-mount package. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±0.1%. The device features a temperature coefficient of 50ppm/°C and supports a maximum shunt current of 15 mA. It operates within an extended temperature range of -40°C to +125°C and holds AEC-Q100 qualification for automotive applications.

Voltage Reference Feature Summary

• AEC-Q100 qualified for automotive reliability standards
• High precision with ±0.1% initial accuracy tolerance
• Micropower operation with low cathode current consumption
• Fixed 2.5V output voltage reference

Voltage Reference Applications

• Automotive electronic systems requiring precise voltage references
• Data acquisition systems needing stable analog references
• Portable battery-powered instrumentation
• Industrial process control circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'QAI' confirms the automotive grade, 2.5V output, and ±0.1% accuracy tier. Confirm the 'NOPB' designation indicates lead-free and RoHS compliance. Ensure the SOT-23-3 package matches the target PCB footprint. Check for any recent Process Change Notifications (PCN) regarding manufacturing site or material changes that may affect long-term sourcing stability.

Voltage Reference Selection Notes

Select this component when high precision is required in space-constrained automotive designs. The ±0.1% tolerance offers superior accuracy compared to standard 0.5% or 1% variants. The low quiescent current makes it suitable for battery-operated devices where power efficiency is critical. Ensure the circuit design can handle the 15 mA maximum shunt current without exceeding thermal limits.

Voltage Reference Part Context

This part belongs to the LM4050-N/-Q1 family of micropower shunt voltage references from Texas Instruments. The family includes various fixed voltage options and accuracy grades. The 'Q' prefix denotes automotive qualification, while 'AI' specifies the 2.5V output and ±0.1% accuracy class. These devices are designed to replace older Zener diodes in precision applications.

Voltage Reference Replacement Considerations

• LM4050QAIM3X2.5/NOPB

Voltage Reference FAQ

What is the maximum operating temperature for this component?

The LM4050QAIM3X2.5/NOPB is rated for an ambient operating temperature range of -40°C to +125°C.

Is this component qualified for automotive use?

Yes, the 'Q' in the part number indicates that it is AEC-Q100 qualified for automotive applications.