LM4128CMF-3.0

Voltage Reference Overview

The LM4128CMF-3.0 is a micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23 package. It provides a fixed output voltage of 3 V with an initial accuracy of 0.5%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 20 mA. Its maximum input voltage is rated at 6 V, and it exhibits a temperature coefficient of 100 PPM/°C.

Voltage Reference Feature Summary

• Provides stable precision voltage referencing for sensitive analog circuits
• Designed for low power consumption applications requiring minimal supply current
• Capable of maintaining performance across extended industrial temperature ranges

Voltage Reference Applications

• Portable instrumentation systems requiring precise voltage standards
• Battery-powered measurement devices needing efficient power management
• Data acquisition systems utilizing analog-to-digital conversion

Voltage Reference Procurement Notes

Verify the specific suffix and marking code against official datasheets to confirm the exact voltage tolerance and package variant. Ensure compatibility with existing PCB footprints and thermal requirements before integration. Cross-reference part numbers with manufacturer documentation to avoid substitution errors due to minor specification differences.

Voltage Reference Selection Notes

Select this component when a fixed 3 V reference with moderate precision is required in a compact surface-mount form factor. Consider the 0.5% initial accuracy and 100 PPM/°C temperature coefficient against application stability needs. Evaluate the 20 mA shunt current capability to ensure adequate load regulation for the target circuit design.

Voltage Reference Part Context

This component belongs to the LM4128 family of micropower series voltage references from Texas Instruments. The family offers various output voltages and accuracy grades within the same SOT-23 footprint, allowing designers to standardize packaging while adjusting precision levels. It serves as a fundamental building block for power management integrated circuits.

Voltage Reference Replacement Considerations

LM4128CMF-3.0/NOPB