LM4128BMF-3.3

Voltage Reference Overview

The LM4128BMF-3.3/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a surface-mount SOT-23-5 package. It provides a fixed output voltage of 3.3 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 shunt current of 20 mA. Key electrical parameters include a temperature coefficient of 75 ppm/°C and a maximum input voltage of 6 V.

Voltage Reference Feature Summary

• Provides stable series voltage reference output
• Designed for low power consumption applications
• Ensures high precision through tight initial accuracy tolerances

Voltage Reference Applications

• Portable instrumentation requiring precise voltage standards
• Battery-powered measurement systems
• Data acquisition circuits needing stable reference sources

Voltage Reference Procurement Notes

Verify the specific suffix (e.g., NOPB) matches the required RoHS compliance status. Confirm the package type is SOT-23-5 for PCB layout compatibility. Ensure the operating voltage range aligns with system requirements before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required. Consider the 75 ppm/°C temperature coefficient for thermal stability needs. Verify that the 20 mA shunt current capability meets load demands.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower series voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades, all sharing similar low-power characteristics and compact SOT-23 packaging for space-constrained designs.

Voltage Reference Replacement Considerations

Check for direct substitutes like LM4128BMF-3.3/NOPB equivalents from other manufacturers. Verify pinout compatibility and thermal performance if replacing with non-TI parts.