ATL432LIAIDBZR

Overview

The TL432LIAIDBZR is a three-terminal adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an internal reference voltage of approximately 2.5 V. The device features an initial accuracy of ±0.5% at 25°C and a temperature coefficient of 92 ppm/°C. It supports a maximum cathode current of 100 mA and functions reliably across an operating temperature range of -40°C to +125°C. The component is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Provides high-precision voltage regulation with ±0.5% initial accuracy for stable reference applications.
• Features low output impedance typical of 0.2 Ω, ensuring effective performance as a Zener diode replacement.
• Offers wide operational stability across extended industrial temperature ranges from -40°C to +125°C.

Applications

• Board-level regulators requiring precise voltage references
• Adjustable power supplies and switching mode power supplies
• Portable equipment utilizing battery-powered circuits

Procurement Notes

Verify the specific suffix 'LIA' against official Texas Instruments documentation to confirm the exact accuracy grade and temperature rating. Ensure the ordering part number matches the required tolerance specifications. Confirm package details and RoHS compliance status directly with the manufacturer or authorized distributors before procurement.

Selection Notes

Select this component when high accuracy is required compared to standard TL432 variants. The LIA suffix indicates specific performance characteristics that differ from other grades. Consider the SOT-23-3 footprint constraints and thermal management requirements for the intended application environment.

Part Context

This device belongs to the TL432 family of adjustable shunt regulators. It shares functional similarities with the TL431 but utilizes a different pinout configuration suitable for SOT-23 packages. The TL432 series is designed to replace Zener diodes in various power management circuits, offering superior stability and adjustability.

Replacement Considerations

Direct substitutes include TL432AIDBZR and TL432IDBZR, though accuracy and temperature coefficients may vary. Verify pin compatibility and electrical specifications against the original design requirements before substitution.