LMV331QDBVRQ1

Overview

The LMV331QDBVRQ1 is an automotive-grade, general-purpose analog comparator manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and consumes 100 uA of quiescent current. The device features a single channel with open collector and open drain outputs capable of sourcing 10 mA. Key electrical specifications include a propagation delay of 300 ns, an input offset voltage of 7 mV, and an input bias current of 250 nA. It supports differential inputs and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Automotive grade qualification compliant with AEC-Q100 standards for reliability in vehicle applications
• Low voltage operation capability suitable for battery-powered and portable electronic systems
• Dual output configuration providing flexibility for CMOS and TTL logic interface compatibility

Applications

• Automotive sensor signal conditioning and threshold detection
• Portable consumer electronics requiring low power consumption
• General purpose voltage monitoring and level shifting circuits

Procurement Notes

Verify the component authenticity by checking the manufacturer's part marking against official datasheet specifications. Confirm that the specific suffix matches the required automotive grade and package variant. Ensure compliance with RoHS directives as indicated in the product documentation. Cross-reference the ordering information with authorized distribution channels to guarantee supply chain integrity and traceability.

Selection Notes

Select this comparator when designing circuits that require low voltage operation below standard 5V rails while maintaining automotive reliability. It is appropriate for applications needing fast response times around 300 ns without the complexity of shutdown modes. Consider its open collector/drain outputs for interfacing with various logic families. Evaluate the 100 uA quiescent current against system power budgets for battery-operated devices.

Part Context

This component belongs to the LMV331 series of low-voltage comparators. It shares functional similarities with other members of the family but is specifically qualified for automotive environments. The QDBVRQ1 designation indicates the SOT-23-5 surface-mount package and automotive grade status. It serves as a robust alternative to standard commercial comparators in harsh operating conditions.

Replacement Considerations

Direct replacements may include other AEC-Q100 qualified comparators from Texas Instruments such as the TL331BQDBVRQ1 for higher voltage ranges or the LM339QDRQ1 for quad configurations. Verify pinout compatibility and electrical parameter overlaps before substitution.