LM4128BQ1MF3.0/NOPB

Voltage Reference Overview

The LM4128BQ1MF3.0/NOPB is an automotive-grade series precision voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3.0 V with an initial accuracy of 0.2%. The device operates within a supply voltage range up to 6 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 100 ppm/°C and consumes 60 µA of operating supply current. The component is housed in a SOT-23-5 package and is qualified under AEC-Q100 standards for operation between -40°C and +125°C.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• High precision series voltage reference architecture
• Low power consumption suitable for battery-operated systems

Voltage Reference Applications

• Automotive electronic control units requiring stable reference voltages
• Precision analog-to-digital converter input references
• Data acquisition systems in harsh thermal environments

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance as per manufacturer specifications. Confirm the 'BQ1' designation aligns with required automotive reliability grades. Ensure the SOT-23-5 footprint matches the target PCB layout constraints. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

Voltage Reference Selection Notes

Select this component when automotive certification is mandatory alongside high initial accuracy. The 3.0 V output suits applications needing precise mid-range references without external scaling. Consider the 100 ppm/°C drift if extreme temperature stability beyond standard automotive ranges is required. Evaluate the 60 µA quiescent current against total system power budgets.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower shunt voltage references. The LM4128 series is designed for applications requiring small size and low cost while maintaining precision. The BQ1 variant specifically targets automotive markets, offering enhanced reliability and thermal performance compared to commercial grade counterparts.

Voltage Reference Replacement Considerations

LM4128AQ1MF3.0/NOPB offers similar automotive qualifications but with 0.1% initial accuracy instead of 0.2%.