TS2431AILT

Overview

The TS2431AILT is an adjustable shunt voltage reference manufactured by STMicroelectronics, housed in a surface-mount SOT-23-3 package. It provides an output voltage range from 2.5 V to 24 V, set via an external resistor divider. The device guarantees an initial accuracy of ±1% at 25 °C and operates within an industrial temperature range of -40 °C to +105 °C. It supports a cathode sink current between 1 mA and 100 mA with a maximum input voltage of 25 V.

Feature Summary

• Adjustable output voltage capability spanning 2.5 V to 24 V using external resistors
• High precision stability with guaranteed ±1% accuracy at room temperature
• Industrial-grade thermal performance across extended operating temperatures
• Compact surface-mount packaging designed for space-constrained circuit layouts

Applications

• Precision power supply regulation circuits
• Portable equipment requiring compact voltage references
• Battery-powered systems needing stable reference voltages
• Industrial control systems operating in harsh environments

Procurement Notes

Verify the specific suffix 'A' confirms the ±1% tolerance grade when sourcing. Confirm the 'LT' suffix indicates the tape-and-reel packaging format required for automated assembly processes. Ensure the component meets RoHS compliance standards relevant to your manufacturing region before finalizing procurement orders.

Selection Notes

Select this component when a precise, adjustable reference is needed in a minimal footprint. The ±1% accuracy suits applications demanding tighter tolerances than standard 2% devices. Verify that the required cathode current falls within the 1 mA to 100 mA operational window to ensure stable regulation without exceeding thermal limits.

Part Context

This part belongs to the TS2431 family of adjustable shunt references from STMicroelectronics. It serves as a direct functional replacement for industry-standard TL431 devices, offering similar electrical characteristics while providing enhanced thermal stability over the full industrial temperature range. The SOT-23-3 package distinguishes it from larger through-hole alternatives.

Replacement Considerations

The datasheet explicitly states performance compatibility with the TL441. Designers replacing legacy TL431 units should verify pinout compatibility and ensure the new circuit accommodates the specific thermal characteristics of the SOT-23-3 package.