TL432LIAIDBZR

Overview

The TL432LIAIDBZR is a three-terminal adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an input voltage range of up to 36 V and provides an adjustable output voltage between the internal reference of approximately 2.495 V and the maximum input limit. The device features an initial accuracy of ±1% at 25°C and maintains stability across a wide operating temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount format, it supports cathode currents ranging from a minimum of 600 µA to a maximum of 100 mA, ensuring reliable performance in space-constrained designs requiring precise voltage regulation.

Feature Summary

• Adjustable output voltage capability spanning from the internal reference level up to the maximum rated input voltage
• High initial accuracy with a tolerance of ±1% at room temperature conditions
• Wide thermal stability maintained across extended industrial and automotive temperature ranges
• Compact three-pin surface-mount package design suitable for dense PCB layouts

Applications

• Board-level voltage regulation for portable electronic devices
• Precision voltage references in data acquisition systems
• Linear regulators in battery-powered equipment
• Switching power supply feedback loops

Procurement Notes

Verify the specific suffix 'LIAI' against the manufacturer's official datasheet to confirm the exact grade, temperature range, and packaging configuration. Ensure compatibility with the target application's thermal requirements and current demands. Cross-reference the part number with authorized distributors to confirm authenticity and availability status before finalizing procurement decisions.

Selection Notes

Select this component when a high-accuracy adjustable reference is required in a small footprint. The ±1% tolerance suits applications demanding tight voltage control without external trimming. Consider the SOT-23-3 package constraints for thermal dissipation and board space. Verify that the system's minimum cathode current exceeds the device's minimum operating requirement to ensure stable regulation under all load conditions.

Part Context

This device belongs to the TL432 family of programmable shunt regulators, which share functional similarities with the TL431 series but utilize different pin configurations for DBZ and PK packages. The TL432 architecture allows for direct replacement of Zener diodes in many circuits while offering superior precision and adjustability. The LI designation typically indicates specific automotive or extended temperature grading within the broader product line.

Replacement Considerations

The TL432AIDBZR serves as a standard commercial-grade alternative within the same package. For fixed-voltage requirements, the TL431 series offers comparable functionality with identical electrical characteristics but distinct pinout arrangements. Verify pin compatibility before substituting any related models to prevent circuit malfunction.