LM4050CEM3-2.0/NOPB

Voltage Reference Overview

The LM4050CEM3-2.0/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, providing a fixed output of 2.048 V. It features an initial accuracy of ±0.5% and a temperature coefficient of 50 ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and supports a maximum cathode current of 15 mA with a typical operating current of 90 µA. Housed in a compact SOT-23-3 package, it delivers low noise performance of 93 µVrms (10Hz to 10kHz). This component is classified under PMIC voltage references and is designed for surface-mount installation.

Voltage Reference Feature Summary

• Provides stable precision voltage regulation via shunt architecture
• Optimized for ultra-low power consumption in battery-operated systems
• Ensures high thermal stability across extended industrial temperature ranges

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix and tolerance grade against design requirements, as the LM4050 series includes variants with different accuracies and automotive qualifications. Confirm availability status, as certain revisions or specific output voltages may be subject to discontinuation notices or long lead times. Ensure the SOT-23-3 footprint matches the PCB layout constraints and that the operating current limits are respected in the final circuit design.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference with moderate precision is required in a minimal footprint. Compare against higher accuracy grades if tighter tolerances are needed, or consider alternative packages if space allows for improved thermal dissipation. Verify that the 15 mA maximum current capability meets the load requirements and that the 50 ppm/°C drift is acceptable for the application's environmental conditions.

Voltage Reference Part Context

This part belongs to the LM4050-N family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades, including automotive-qualified versions. The LM4050 series is designed to replace older discrete zener diodes in applications requiring better stability and lower power consumption, fitting into standard SOT-23 footprints for easy integration into modern compact electronics.

Voltage Reference Replacement Considerations

Direct pin-compatible substitutes within the same family include other LM4050 variants with different output voltages or accuracy grades, such as LM4050CEM3X-2.5/NOPB. For non-pin-compatible alternatives, verify electrical equivalence carefully.