TLV431BQDBZRQ1G4

Overview

The TLV431BQDBZRQ1G4 is an automotive-grade, low-voltage adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 6 V and provides an adjustable output voltage from 1.252 V to 6 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 161 PPM/C. It supports a maximum cathode current of 15 mA with a minimum operating current of 100 uA. The component functions across an extended temperature range from -40°C to +125°C and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Adjustable output voltage capability allowing precise regulation within the specified low-voltage window
• High initial accuracy ensures stable reference performance across manufacturing variations
• Compact SOT-23-3 packaging facilitates space-constrained printed circuit board layouts

Applications

• Automotive power supply monitoring circuits
• Battery management system voltage references
• Low-voltage linear regulator feedback networks
• Industrial control system analog signal conditioning

Procurement Notes

Verify the complete part number including the G4 suffix to ensure correct RoHS compliance and specific tape-and-reel packaging configuration. Confirm that the sourcing channel provides valid traceability documentation required for automotive applications. Ensure the received components match the specified SOT-23-3 package dimensions and pinout to prevent assembly errors during production integration.

Selection Notes

Select this component when designing systems requiring strict automotive reliability standards alongside low-voltage operation constraints. The 0.5% initial accuracy makes it suitable for applications demanding tight tolerance without external calibration. Consider the 161 PPM/C temperature coefficient when evaluating thermal stability requirements compared to higher-performance alternatives like the ATL431 series for wider voltage ranges.

Part Context

This device belongs to the TLV431B family of adjustable shunt regulators designed specifically for low-voltage automotive electronics. It serves as a drop-in replacement for standard TLV431 devices where automotive qualification is mandatory. The Q1 designation indicates compliance with automotive quality management systems, distinguishing it from commercial grade variants while maintaining similar electrical characteristics for seamless design migration.

Replacement Considerations

Direct substitutes include other TLV431BQDBZRQ1 variants with different suffixes indicating packaging or reel specifications. Verify compatibility with existing PCB footprints when replacing non-G4 versions. Ensure any alternative maintains the same SOT-23-3 package and automotive qualification status to preserve system reliability certifications.