TLV431AQDBVRQ1G4

Overview

The TLV431AQDBVRQ1G4 is an automotive-grade, low-voltage adjustable precision shunt regulator 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 1.24 V to the supply rail. The device features an initial accuracy of 0.4% at 25°C and maintains stability with a minimum cathode current of 100 µA. It is housed in a compact SOT-23-5 package and supports operation across an extended temperature range of -40°C to +125°C.

Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards for robust performance in vehicle environments
• Low-voltage operation capability optimized for battery-powered and portable electronic applications
• High initial accuracy ensures precise voltage reference regulation without requiring external calibration

Applications

• Battery-operated equipment requiring stable voltage references
• Portable instrumentation circuits
• DC/DC converter feedback loops
• Power supply monitoring systems

Procurement Notes

Verify that the specific suffix Q1G4 corresponds to the intended automotive qualification level and tape-and-reel packaging configuration. Confirm that the component meets all relevant AEC-Q100 requirements for your specific application environment. Ensure compatibility with your manufacturing process regarding moisture sensitivity levels and reflow soldering profiles before finalizing procurement orders.

Selection Notes

Select this component when designing for automotive applications requiring a low-voltage, high-accuracy reference. It is suitable for systems where space is limited due to its small SOT-23-5 footprint. Consider the 100 µA minimum operating current when designing bias networks to ensure stable regulation under light load conditions compared to higher-current alternatives.

Part Context

This part belongs to the TLV431 family of adjustable shunt regulators, specifically tailored for automotive use. It serves as a cost-effective alternative to Zener diodes, offering superior temperature stability and lower dynamic impedance. The device integrates a bandgap reference and error amplifier to provide precise voltage control in power management circuits.

Replacement Considerations

Non-automotive equivalents like the standard TLV431 lack the required AEC-Q100 certification. Direct pin-compatible replacements must be verified for automotive grade status. Check datasheets for differences in minimum cathode current and initial accuracy specifications.