TL431AQDBZT

Overview

The TL431AQDBZT is an automotive-grade adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 2.495 V to 36 V and supports a maximum cathode current of 100 mA with a minimum operating current of 700 µA. The device features an initial accuracy of ±1% and a temperature coefficient of 92 ppm/°C. Designed for robust performance, it functions across an extended temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards
• Adjustable output voltage ranging from 2.495 V to 36 V
• High precision with ±1% initial accuracy specification

Applications

• Automotive power supply regulation circuits
• Precision voltage references in automotive control modules
• Battery management systems requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'Q' confirms automotive qualification status against the official manufacturer datasheet. Ensure the SOT-23-3 package variant matches the design footprint requirements. Confirm RoHS compliance and REACH status through the latest product data sheet documentation prior to integration.

Selection Notes

Select this component when automotive grade certification is mandatory for the application environment. The wide operating temperature range supports harsh conditions. Consider the 100 mA current capability for load requirements. Verify that the SOT-23-3 package dimensions fit the available PCB space constraints.

Part Context

This part belongs to the TL431 family of adjustable shunt regulators. The 'Q' designation indicates automotive qualification. It serves as a high-precision reference element in feedback loops. The SOT-23-3 package offers a small form factor suitable for dense board layouts.

Replacement Considerations

TL431AQDBVT is listed as a direct replacement option.