LM4128BQ1MFX2.0/NOPB

Voltage Reference Overview

The LM4128BQ1MFX2.0/NOPB is an automotive-grade precision micropower series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.2% and a temperature coefficient of 100 ppm/°C. The device operates within a supply voltage range up to 6 V and supports a maximum shunt current of 20 mA while consuming only 60 µA of quiescent current. It is qualified under AEC-Q100 standards for automotive applications and functions reliably across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle electronics
• Micropower operation with low quiescent current consumption suitable for battery-powered systems
• Precision series regulation architecture ensuring stable output voltage under varying load conditions

Voltage Reference Applications

• Automotive sensor signal conditioning circuits
• Data acquisition systems requiring high-accuracy voltage references
• Portable instrumentation powered by limited energy sources

Voltage Reference Procurement Notes

Verify the specific suffix 'MFX' indicates tape-and-reel packaging when ordering. Confirm that the 'Q1' designation aligns with required automotive qualification levels for your specific application environment. Ensure compatibility with SOT-23-5 footprint requirements during PCB layout planning.

Voltage Reference Selection Notes

Select this component when automotive reliability and low power consumption are critical alongside moderate precision requirements. Compare against non-automotive variants if cost reduction is prioritized over extended temperature validation. Consider higher accuracy options if tighter tolerance than 0.2% is necessary for your measurement chain.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision voltage references, specifically designed for automotive environments. It shares architectural similarities with other LM4128 variants but differs in output voltage and packaging configuration. The 'BQ1' prefix denotes automotive grade and specific binning for accuracy and temperature performance characteristics defined by Texas Instruments.

Voltage Reference Replacement Considerations

LM4128AQ1MF2.0/NOPB offers similar automotive qualifications with potentially different initial accuracy bins. LM4128BQ1MF2.5/NOPB provides a 2.5 V output option within the same package and qualification standard.