TL432LIAQDBZRQ1

Overview

The TL432LIAQDBZRQ1 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 referenced against an internal 2.5 V reference. The device features a typical initial accuracy of 0.5% at 25°C and maintains stability across a junction temperature range of -40°C to +125°C. Designed for surface-mount applications, it utilizes a compact SOT-23 package to support space-constrained circuit designs.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for long-term reliability in vehicle environments
• High bandwidth capability supports fast transient response requirements in switching power supplies
• Low quiescent current operation minimizes power consumption during standby or light-load conditions

Applications

• Secondary regulation in automotive DC-DC converters
• Precision voltage referencing in battery management systems
• Feedback control loops in isolated power supplies

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and tolerance specifications. Confirm that the component meets specific functional safety requirements if utilized in safety-critical automotive circuits. Cross-reference datasheet revisions to ensure compatibility with existing design documentation and simulation models.

Selection Notes

Select this component when automotive reliability and high-speed loop dynamics are required. The low quiescent current makes it suitable for energy-efficient designs. Ensure the external resistor network can handle the maximum cathode current specified in the datasheet while maintaining the desired output voltage precision across the full operating temperature range.

Part Context

This device belongs to the TL43x-Q1 family of programmable shunt regulators designed specifically for automotive electronics. It shares functional similarities with commercial counterparts but undergoes stricter manufacturing controls and testing protocols to meet automotive quality standards. The family offers various accuracy grades and package options to suit different system constraints.

Replacement Considerations

Compatible substitutes include TL432BQDBZRQ1 and TL432AQDBZRQ1 from the same manufacturer. Verify pinout compatibility and electrical parameter alignment before substitution.