TL431IYDT

Overview

The TL431IYDT is an adjustable micropower shunt voltage reference manufactured by STMicroelectronics. It provides a stable reference voltage with an initial accuracy of ±1%. The device operates within a wide current range from 1 mA to 100 mA and features a typical dynamic impedance of 0.22 Ω. The output voltage is programmable between 2.5 V and 36 V using two external resistors. It is housed in an 8-pin SOIC surface-mount package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Adjustable output voltage capability ranging from 2.5 V to 36 V via external resistor network
• High precision with ±1% initial accuracy for stable reference performance
• Wide sink current operation from 1 mA to 100 mA with low dynamic impedance
• Automotive grade qualification ensuring reliability under extended thermal conditions

Applications

• Power supply regulation circuits
• Industrial control systems
• Automotive electronics applications

Procurement Notes

Verify the specific suffix 'IYDT' against official STMicroelectronics documentation to confirm the exact tolerance, package variant, and temperature rating. Ensure compatibility with design requirements for the 8-SOIC form factor and AEC-Q100 automotive standards before integration.

Selection Notes

Select this component when a precise, adjustable shunt reference is required for power management or industrial applications. The ±1% accuracy and wide operating current range make it suitable for designs needing stable voltage references without complex circuitry. Consider the SO-8 package constraints and thermal limits during layout.

Part Context

This part belongs to the TL431 family of programmable shunt voltage references known for guaranteed temperature stability. The TL431 series is widely used as a precision reference in various electronic designs, offering flexibility through external resistor setting. The IYDT designation indicates a specific automotive-grade variant optimized for reliability in harsh environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.