LM4128BQ1MFX2.5/NOPB

Voltage Reference Overview

The LM4128BQ1MFX2.5/NOPB is an automotive-grade precision micropower shunt voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +125°C and features a maximum series input voltage of 6 V. It supports a maximum shunt current of 20 mA and consumes 60 µA of operating supply current. The component is AEC-Q100 qualified for automotive applications.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• Micropower operation with low quiescent current consumption
• Precision voltage regulation with tight initial accuracy tolerance

Voltage Reference Applications

• Automotive electronic systems requiring stable reference voltages
• Data acquisition circuits in vehicle environments
• Analog-to-digital converter reference inputs

Voltage Reference Procurement Notes

Verify the specific suffix 'BQ1' confirms the 0.2% accuracy grade and automotive qualification status against the manufacturer's official datasheet. Ensure the 'MF' package code matches the required SOT-23-5 footprint for PCB layout compatibility. Confirm RoHS compliance details as specified in the product documentation before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when automotive reliability and high precision are required in space-constrained designs. The SOT-23-5 package offers a compact solution for surface-mount assembly. Consider the 6 V maximum input voltage limit and 20 mA shunt current capability to ensure proper biasing conditions are met within the target circuit design constraints.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower shunt voltage references. The 'BQ1' designation indicates it meets automotive quality requirements and specifies the 0.2% initial accuracy variant. It serves as a stable voltage benchmark for analog signal processing chains in demanding operational environments.

Voltage Reference Replacement Considerations

LM4128AQ1MFX2.5/NOPB: Offers higher 0.1% accuracy but may have different thermal characteristics.

Voltage Reference FAQ

What is the maximum operating temperature for this component?

The maximum operating temperature is +125°C.

Is this component suitable for automotive applications?

Yes, it is AEC-Q100 qualified for automotive use.