LM4128BMF-3.3/NOPB

Voltage Reference Overview

The LM4128BMF-3.3/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, designed for surface-mount applications in the 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 input voltage of 6 V. Key electrical specifications include a maximum shunt current of 20 mA and a typical temperature coefficient of 75 ppm/°C.

Voltage Reference Feature Summary

• Provides a stable fixed 3.3 V reference output with high initial accuracy.
• Operates efficiently at low quiescent currents suitable for battery-powered systems.
• Designed for compact surface-mount integration in space-constrained PCB layouts.

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB to ensure compliance with RoHS standards and lead-free manufacturing requirements. Confirm the specific packaging option (cut tape, reel, or MouseReel) matches your assembly equipment capabilities. Ensure the supplier source is authorized to guarantee component authenticity and traceability.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a small SOT-23-5 footprint. Consider the 75 ppm/°C temperature coefficient for thermal stability needs. Verify that the 20 mA maximum shunt current meets the load regulation requirements of the target circuit design.

Voltage Reference Part Context

This component belongs to the LM4128 series of precision micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades, all sharing a common low-power architecture and compact SOT-23-5 packaging format for efficient power management solutions.

Voltage Reference Replacement Considerations

LM4128BMF-3.3/NOPB is functionally equivalent to LM4128BMF-3.3. Cross-referencing with other manufacturers requires verifying pinout compatibility and electrical parameter alignment.