LM4050QBEM3X5.0/NOPB

Voltage Reference Overview

The LM4050QBEM3X5.0/NOPB is a micropower shunt voltage reference IC from Texas Instruments, designed for automotive applications under the AEC-Q100 qualification standard. It provides a fixed output voltage of 5V with an initial accuracy of ±0.2% and a temperature coefficient of 50ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and features a maximum shunt current of 15mA. It utilizes a SOT-23 (DBZ) surface-mount package with three pins, measuring 2.90mm x 1.65mm in footprint and 1.10mm in height.

Voltage Reference Feature Summary

• AEC-Q100 qualified for automotive reliability requirements
• Micropower operation with low cathode current consumption
• High precision fixed output voltage with tight tolerance
• Compact SOT-23 surface-mount packaging

Voltage Reference Applications

• Automotive electronic control units
• Precision analog-to-digital converter references
• Battery monitoring systems
• Sensor signal conditioning circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'Q' indicates automotive grade qualification and 'EM3' denotes the SOT-23 package variant. Confirm the 'NOPB' suffix ensures lead-free and RoHS compliance as per manufacturer specifications. Cross-reference the full part number against official Texas Instruments documentation to ensure compatibility with design-in requirements and supply chain availability.

Voltage Reference Selection Notes

Select this component when automotive-grade reliability is required alongside high precision voltage referencing. The 5V output suits interfaces requiring stable reference levels without external trimming. Consider the 15mA shunt current limit for load regulation needs. The SOT-23 package is suitable for space-constrained PCB layouts in automotive modules.

Voltage Reference Part Context

This part belongs to the LM4050-N-Q1 series of precision micropower shunt voltage references. It shares architectural similarities with other LM4050 variants but is specifically optimized for automotive environments through rigorous qualification testing. The series offers various voltage options and accuracy grades, with this specific model providing a balanced combination of precision and power efficiency.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4050-Q1 variants with matching 5V output and SOT-23 packaging, such as LM4050QBEM3X5.0/NOPB equivalents. Verify that replacement parts maintain the same AEC-Q100 qualification level and thermal characteristics to ensure system reliability in automotive applications.