LM4050BIM3-5.0/NOPB

Voltage Reference Overview

The LM4050BIM3-5.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output of 5V with an initial accuracy of ±0.2% and a temperature coefficient of 50ppm/°C. The device operates within a current range of 80µA to 15mA and features low dynamic impedance. It is housed in a surface-mount SOT-23-3 package and is qualified to AEC-Q100 standards for automotive applications, supporting an operating temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable 5V reference via two-terminal shunt topology without requiring external stabilizing capacitors.
• Maintains high precision with 50ppm/°C temperature coefficient across the full industrial and automotive temperature range.
• Ensures stability with any capacitive load due to low dynamic impedance characteristics.

Voltage Reference Applications

• Automotive electronic systems requiring AEC-Q100 qualified voltage references.
• Precision analog-to-digital converter (ADC) input conditioning circuits.
• Battery-powered instrumentation utilizing micropower shunt regulation.

Voltage Reference Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and AEC-Q100 certification status for automotive compliance. Check for obsolescence notices as this specific part number may be discontinued or subject to last-time buy restrictions. Ensure packaging matches required reel or cut-tape specifications for automated assembly processes.

Voltage Reference Selection Notes

Select this component when a fixed 5V reference with ±0.2% initial accuracy is required in a compact SOT-23-3 footprint. It is suitable for designs needing AEC-Q100 qualification and operation up to 125°C. Consider alternatives if lower temperature coefficients or higher accuracy grades are necessary, as this model represents a specific balance of precision and cost.

Voltage Reference Part Context

This device belongs to the LM4050 series of precision micropower shunt voltage references. It shares functional similarities with the LM4040 series but offers tighter initial accuracy and specific automotive qualification. The 'NOPB' suffix indicates lead-free construction and RoHS compliance, aligning with modern environmental standards for electronic components produced by Texas Instruments.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers include LM4050BIM3X-5.0 and LM4050AEM3-5.0. Verify pinout compatibility and electrical parameter alignment before substitution.