TL431AQDBVR

Overview

The TL431AQDBVR is an adjustable precision shunt regulator from Texas Instruments, housed in a SOT-23-5 surface-mount package. It provides an adjustable output voltage range from 2.495 V to 36 V with an initial accuracy of ±1%. The device supports a maximum cathode current of 100 mA and operates within an extended temperature range of -40°C to +125°C. It features a typical temperature coefficient of 92 ppm/°C and a maximum input voltage of 36 V.

Feature Summary

• Adjustable reference voltage capability spanning 2.495 V to 36 V for flexible circuit design
• High precision performance with ±1% initial accuracy tolerance
• Automotive-grade qualification ensuring reliability under harsh environmental conditions
• Wide operating temperature range suitable for demanding industrial applications

Applications

• Precision voltage references in automotive electronic control units
• Programmable output power supplies requiring stable regulation
• Battery management systems needing accurate voltage monitoring
• Industrial process control equipment utilizing shunt regulation

Procurement Notes

Verify the specific suffix DBVR indicates tape and reel packaging configuration. Confirm the AQ designation aligns with required automotive quality standards and extended temperature ratings. Ensure compatibility with SOT-23-5 footprint during PCB layout. Check RoHS compliance status against current regulatory requirements for your target market.

Selection Notes

Select this component when high precision and automotive reliability are required in a compact surface-mount form factor. The adjustable voltage range allows customization via external resistors. Consider the 100 mA current limit for load requirements. The wide temperature range makes it suitable for environments exceeding standard commercial limits.

Part Context

This part belongs to the TL431 family of programmable shunt regulators. It serves as a versatile alternative to fixed voltage references. The SOT-23-5 package offers space efficiency compared to larger through-hole options. It integrates a bandgap reference and error amplifier for stable operation.

Replacement Considerations

Direct substitutes include other TL431 variants with matching automotive grades and packages. Verify pinout compatibility before substitution. Alternative manufacturers may offer similar specifications but require electrical parameter validation.