LM4128DQ1MFX3.3/NOPB

Voltage Reference Overview

The LM4128DQ1MFX3.3/NOPB is an automotive-grade series precision voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3.3 V with an initial accuracy of 1%. 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 functions reliably across a temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount case, it consumes a quiescent current of 60 µA and holds AEC-Q100 qualification for automotive applications.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard
• High precision series voltage reference architecture
• Compact five-pin surface-mount packaging

Voltage Reference Applications

• Automotive electronic systems requiring stable reference voltages
• Precision analog-to-digital converter (ADC) reference inputs
• Data acquisition systems in harsh thermal environments

Voltage Reference Procurement Notes

Verify the specific suffix DQ1MF against the official Texas Instruments datasheet to confirm the 3.3 V output and 1% tolerance specifications. Ensure the component meets AEC-Q100 requirements for your target application. Confirm package integrity and pinout alignment with the SOT-23-5 footprint before integration into the design.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference is required for automotive circuits. It offers a balance of low power consumption and moderate precision. Consider alternative accuracy grades if tighter tolerances than 1% are necessary. Verify that the 100 ppm/°C drift rate aligns with the thermal stability requirements of the system.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower shunt voltage references. The LM4128 series is designed for applications needing a stable reference in space-constrained designs. The Q1 designation indicates compliance with automotive quality standards, distinguishing it from commercial variants while maintaining similar electrical characteristics.

Voltage Reference Replacement Considerations

LM4128DQ1MF3.3/NOPB