TLA432AQDBZR

Overview

The TLA432AQDBZR is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 36 V and provides an initial accuracy of 1%. The device functions as a three-terminal programmable shunt regulator, allowing output voltage setting via external resistors. It supports a maximum cathode current of 100 mA and maintains stability across a wide operating temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount case, it is designed for applications requiring high thermal stability and precise voltage regulation without the need for additional stabilization capacitors.

Feature Summary

• All-capacitor stable design eliminates the need for output stabilization capacitors
• High thermal stability with low temperature coefficient over extended industrial temperature ranges
• Precision initial accuracy ensures consistent voltage reference performance
• Compact SOT-23-3 package suitable for space-constrained surface-mount applications

Applications

• Portable equipment power supply regulation
• Battery-powered systems requiring precise voltage monitoring
• General-purpose voltage references in control circuits
• Switching power supply feedback loops

Procurement Notes

Verify the specific suffix 'AQ' denotes automotive-grade qualification and A-class accuracy when sourcing. Confirm the 'DBZR' suffix indicates the SOT-23-3 package and reel packaging format. Ensure compatibility with RoHS3 standards if required by your manufacturing process. Cross-reference datasheet revisions to confirm pinout consistency with existing designs. Validate that the 1% initial accuracy meets your circuit tolerance requirements before finalizing procurement.

Selection Notes

Select this component when a stable, all-capacitor reference is needed in a small footprint. The TLA432 series offers improved thermal performance compared to standard TL432 variants. Consider the 100 mA cathode current capability for driving moderate loads. The SOT-23-3 package is ideal for dense PCB layouts. Verify that the 36 V maximum input voltage aligns with your system's supply rails.

Part Context

The TLA432AQDBZR belongs to the TLA432 family of all-capacitor stable precision programmable shunt regulators. This series is engineered to replace Zener diodes in various applications while offering superior stability and accuracy. The 'A' grade signifies tighter initial accuracy tolerances, and the 'Q' designation typically indicates automotive reliability standards. It serves as a direct functional upgrade to legacy TL432 devices with enhanced thermal characteristics.

Replacement Considerations

The TLVH432AQDBZR is a verified alternative within the same manufacturer portfolio, offering similar functionality in the SOT-23-3 package. Check pinout compatibility between TLA432 and TLVH432 families before substitution. The TL432AIDBZR is another variant but may differ in package type or specific electrical parameters. Always consult official datasheets to confirm interchangeability.