LM4128BMF-3.0

Voltage Reference Overview

The LM4128BMF-3.0 is a 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 V with an initial accuracy of ±0.2%. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 µA. It features a temperature coefficient of 75 ppm/°C and supports a maximum shunt current of 20 mA. The component functions reliably across an extended industrial temperature range from -40 °C to +125 °C.

Voltage Reference Feature Summary

• Provides stable precision voltage reference performance with low power consumption suitable for battery-operated systems
• Features high initial accuracy and low temperature drift characteristics for maintaining signal integrity
• Utilizes compact surface-mount packaging to facilitate space-constrained circuit board designs

Voltage Reference Applications

• Portable instrumentation requiring precise analog-to-digital conversion references
• Battery-powered measurement devices needing long-term stability and low current draw
• Data acquisition systems utilizing serial analog-to-digital converters

Voltage Reference Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and temperature coefficients. Ensure compatibility with existing PCB footprints and thermal management requirements during integration. Cross-reference datasheet revisions to validate parameter consistency before finalizing procurement specifications.

Voltage Reference Selection Notes

Select this component when design constraints demand a balance between high precision and minimal power usage. The fixed 3 V output eliminates the need for external resistor networks, simplifying schematic design. Consider the operating temperature range and package size relative to the target application environment to ensure reliable long-term performance.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references designed for applications requiring small form factors and low energy consumption. The BMF variant specifically denotes defined accuracy grades and thermal performance metrics within the broader product line, distinguishing it from other tolerance levels or automotive-grade equivalents.

Voltage Reference Replacement Considerations

LM4128BMF-3.0/NOPB serves as a direct equivalent offering lead-free compliance while maintaining identical electrical specifications and pinout configuration.