LM4128BQ1MFX1.8/NOPB

Voltage Reference Overview

The LM4128BQ1MFX1.8/NOPB is an automotive-grade precision micropower series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.8 V with an initial accuracy of 0.2% and a temperature coefficient of 75 ppm/°C. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 µA. It is qualified under AEC-Q100 standards for automotive applications and functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-5 surface-mount package, designed for space-constrained circuit designs requiring stable voltage regulation.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Precision micropower operation with low quiescent current consumption
• Fixed series voltage reference architecture ensuring stable output
• Extended industrial temperature range capability for harsh environments

Voltage Reference Applications

• Automotive sensor signal conditioning circuits
• Data acquisition systems requiring precise voltage benchmarks
• Battery management system voltage monitoring
• Medical instrumentation power supplies

Voltage Reference Procurement Notes

Verify the specific suffix 'BQ1' confirms automotive grade AEC-Q100 qualification and 0.2% accuracy tier. Ensure the 'X' indicates reel packaging if bulk procurement is required. Confirm the '1.8' designation matches the required 1.8 V output voltage. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status before finalizing orders.

Voltage Reference Selection Notes

Select this component when automotive reliability and low power consumption are critical. The 0.2% initial accuracy offers a balance between cost and precision compared to tighter tolerance variants. The SOT-23-5 package suits applications with limited board space. Consider the 75 ppm/°C temperature coefficient for thermal stability requirements within the specified operating range.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision voltage references. The 'BQ1' suffix denotes automotive qualification, distinguishing it from commercial grades like the LM4128DMFX. It shares the same core reference architecture but undergoes stricter testing protocols. The family includes various output voltages and accuracy grades, all maintaining the micropower characteristic essential for battery-operated devices.

Voltage Reference FAQ

What is the maximum input voltage for the LM4128BQ1MFX1.8/NOPB?

The maximum series reference input voltage is 6 V.

Does this component meet automotive reliability standards?

Yes, it is qualified according to the AEC-Q100 standard for automotive applications.