LM4128BMF-1.8

Voltage Reference Overview

The LM4128BMF-1.8 is a precision micropower series voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 1.8 V with an initial accuracy of ±0.2% and a temperature coefficient of 75 ppm/°C. The device operates within an input voltage range up to 6 V and supports a maximum shunt current of 20 mA. It functions reliably across a temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable fixed voltage output for precision applications
• Micropower consumption suitable for battery-operated systems
• High accuracy with low temperature drift characteristics

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems needing stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free status and RoHS compliance as per Texas Instruments documentation. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets the application's environmental requirements. Check for any specific handling or storage guidelines provided in the official datasheet.

Voltage Reference Selection Notes

Select this component when a fixed 1.8 V reference with ±0.2% accuracy is required. Consider the 75 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 20 mA maximum shunt current against load requirements. Compare power consumption benefits against other series references if micropower operation is critical.

Voltage Reference Part Context

This part belongs to the LM4128 family of precision micropower series voltage references. It shares the same core architecture as other variants in the series but offers a specific 1.8 V output. The family is designed for applications requiring high accuracy and low power consumption in compact packages.

Voltage Reference Replacement Considerations

LM4128AMF-1.8/NOPB offers similar performance with slightly different accuracy specifications. LM4128CMF-1.8/NOPB provides alternative accuracy levels within the same package. Verify pin compatibility and electrical parameters before substitution.