LM4128CMFX-2.5

Voltage Reference Overview

The LM4128CMFX-2.5/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It delivers a fixed output voltage of 2.048 V with an initial accuracy of 0.5%. The device features a temperature coefficient of 100 ppm/°C and supports a maximum input voltage of 6 V. It operates within a junction current range up to 20 mA and consumes a typical quiescent current of 60 µA. The component functions reliably across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable micropower series regulation for low-current applications
• Ensures high precision through tight initial accuracy specifications
• Maintains performance stability across wide industrial temperature extremes

Voltage Reference Applications

• Portable instrumentation requiring precise voltage standards
• Battery-powered measurement systems needing low power consumption
• Data acquisition channels requiring accurate reference sources

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official Texas Instruments documentation to ensure correct output voltage and tolerance levels. Confirm that the SOT-23-5 package variant matches the target PCB footprint requirements. Cross-reference the AEC-Q100 qualification status if automotive reliability standards are mandatory for the intended deployment environment.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference is required with minimal power draw. Evaluate the 100 ppm/°C temperature drift against system thermal constraints. Ensure the 20 mA maximum shunt current capability aligns with load requirements while maintaining regulation within the specified accuracy bounds under varying supply conditions.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades tailored for space-constrained designs. The LM4128CMFX-2.5/NOPB specifically targets applications demanding reliable performance in harsh thermal environments using compact surface-mount packaging.

Voltage Reference Replacement Considerations

LM4128CMF-2.0/NOPB

Voltage Reference FAQ

What is the maximum operating junction current?

The maximum operating junction current is 20 mA.

Does this component support automotive qualification?

The standard LM4128CMFX-2.5/NOPB is not explicitly listed as AEC-Q100 qualified; automotive variants typically carry the AQ1 suffix.