LM4050QCEM3X10/NOPB

Voltage Reference Overview

The LM4050QCEM3X10/NOPB is an automotive-grade micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed 10V output with an initial accuracy of 0.5% and a temperature coefficient of 50ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and is qualified under AEC-Q100 standards. Packaged in a compact SOT-23-3 surface-mount case, it draws a maximum cathode current of 90µA and supports a maximum shunt current of 15mA.

Voltage Reference Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Micropower operation with low cathode current consumption
• Precision voltage regulation with tight initial accuracy tolerance
• Compact three-terminal SOT-23 surface-mount package design

Voltage Reference Applications

• Automotive electronic control unit (ECU) reference circuits
• Data acquisition systems requiring stable voltage references
• Portable battery-powered instrumentation
• Industrial process control signal conditioning

Voltage Reference Procurement Notes

Verify the specific suffix X10 indicates tape-and-reel packaging configuration when ordering. Confirm the Q designation aligns with required automotive grade specifications. Ensure the 10V output variant matches the circuit design requirements. Check for RoHS compliance status as per manufacturer documentation. Validate the SOT-23-3 footprint compatibility with existing PCB layouts.

Voltage Reference Selection Notes

Select this component when a fixed 10V reference is required in space-constrained automotive applications. The 0.5% accuracy suits general-purpose precision tasks where tighter tolerances are unnecessary. Consider the 50ppm/°C drift for thermal stability needs across the extended industrial temperature range. Evaluate the 15mA load capability against downstream circuit demands.

Voltage Reference Part Context

This part belongs to the LM4050 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The Q prefix denotes automotive qualification, while the CEM3 suffix specifies the SOT-23-3 package type. The NOPB suffix indicates lead-free and rohs-compliant construction.

Voltage Reference Replacement Considerations

LM4050QCEM3-8.2/NOPB serves as a functional substitute offering similar automotive qualifications and package but provides an 8.2V output instead of 10V.