TL432LIAQDBZR

Overview

The TL432LIAQDBZR is an automotive-grade, high-bandwidth, low-quiescent current programmable shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an adjustable output voltage. The device features an initial accuracy of 1% and a temperature coefficient of 63 PPM/°C. It supports a maximum cathode current of 15 mA with a minimum operating current of 1 mA. The component is housed in a SOT-23-3 package and is rated for an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for enhanced reliability in vehicle environments.
• High bandwidth capability ensures stable regulation performance under dynamic load conditions.
• Low quiescent current consumption minimizes power loss in battery-operated or energy-efficient systems.
• Adjustable output voltage allows flexible configuration via external resistors across a wide range.

Applications

• Automotive power supply regulation circuits
• Battery management system voltage monitoring
• Industrial control system reference voltage generation

Procurement Notes

Verify the specific suffix 'Q' indicates automotive grade qualification when sourcing. Confirm the 'LIA' designation matches required accuracy and temperature specifications. Ensure the DBZR package variant aligns with PCB footprint requirements. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.

Selection Notes

Select this component for applications requiring automotive reliability and precise voltage referencing. Compare against standard industrial grades if cost sensitivity outweighs automotive certification needs. Evaluate thermal management requirements given the SOT-23-3 package constraints. Consider the 15 mA current limit when designing feedback networks for higher load demands.

Part Context

This part belongs to the TL432 family of programmable shunt regulators, which are widely used as precision voltage references. Unlike the TL431, the TL432 offers different pin configurations suitable for compact surface-mount designs. The LIAQ variant specifically targets automotive markets, providing robustness against electrical noise and thermal stress common in vehicle electronics.

Replacement Considerations

TL432LIAQDBZT is a tape-and-reel alternative within the same family. TL432AIDBZR serves as a commercial-grade substitute but lacks automotive qualification. Verify compatibility before swapping non-automotive parts into automotive designs.