TLV431AQDBVRQ1

Overview

The TLV431AQDBVRQ1 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 36 V and supports a cathode current up to 100 mA. The device features an initial accuracy of 0.5% and a temperature coefficient of 161 ppm/°C. It is qualified under AEC-Q100 standards for automotive applications and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount case, it serves as a stable reference element in power management circuits.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle electronics
• Adjustable output voltage capability utilizing external resistor networks for flexible design integration
• Low-voltage operation optimized for battery-powered and energy-efficient systems
• Precision performance ensuring stable reference voltage across wide industrial and automotive temperature ranges

Applications

• Battery monitoring and management systems in automotive platforms
• Precision voltage references for analog-to-digital converter interfaces
• Feedback regulation loops in DC-DC switching converters
• Over-voltage protection circuitry in electronic control units

Procurement Notes

Verify that the specific part marking matches the full orderable part number TLV431AQDBVRQ1 to ensure correct automotive grade and package variant. Confirm AEC-Q100 compliance requirements align with target application specifications. Check for any recent product change notifications regarding manufacturing site or material composition updates. Ensure ordering quantities match available reel or cut-tape packaging options provided by distributors.

Selection Notes

Select this component when designing for automotive environments requiring high precision and low-voltage operation. The SOT-23-3 package offers space efficiency for dense PCB layouts. Consider the 161 ppm/°C temperature coefficient if thermal stability is critical. Compare against standard grade alternatives if automotive certification is not required for cost optimization. Ensure the external resistor network supports the desired output voltage within the 2.5 V minimum reference threshold.

Part Context

This device belongs to the TLV431 family of adjustable shunt regulators, specifically tailored for automotive quality levels. It complements other Texas Instruments voltage references like the TL431 series but distinguishes itself through enhanced automotive reliability testing and specific low-voltage performance characteristics. The Q suffix indicates automotive qualification, while DBVR denotes the SOT-23-3 package configuration.

Replacement Considerations

Direct substitutes include TLV431AIDBVRQ1 for non-automotive use or different package variants within the same family. Cross-reference with TL431AQDBZRQ1 for higher current capabilities if system demands exceed 100 mA. Verify pinout compatibility before swapping with generic shunt regulators to prevent circuit damage.