LM4128BMFX-3.3/NOPB

Voltage Reference Overview

The LM4128BMFX-3.3/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount 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. It supports input voltages up to 6 V and exhibits a temperature coefficient of 75 ppm/°C.

Voltage Reference Feature Summary

• Provides stable series voltage reference performance suitable for precision applications
• Operates efficiently at low quiescent currents for battery-powered systems
• Delivers high initial accuracy with tight tolerance specifications

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'BMFX' against the manufacturer's official datasheet to confirm the exact accuracy grade and packaging configuration. Ensure the component meets all environmental and electrical requirements for the intended application before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a compact SOT-23-5 footprint. Consider the 75 ppm/°C temperature coefficient and 20 mA maximum shunt current limits during circuit design to ensure proper operation under varying load conditions.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades, designed for space-constrained and power-sensitive electronic applications requiring reliable voltage regulation.

Voltage Reference Replacement Considerations

LM4128BMF-3.3/NOPB