TL1431IYDT

Overview

The TL1431IYDT is an adjustable shunt voltage reference manufactured by STMicroelectronics, housed in an 8-SOIC surface-mount package. It provides a guaranteed temperature stability over the operating range with an initial accuracy of ±0.4%. The device operates within a wide current range from 1 mA to 100 mA and features a typical dynamic impedance of 0.2 Ω. The output voltage is adjustable between 2.5 V and 36 V using two external resistors. It supports a maximum series input voltage of 36 V and functions across temperatures from -40 °C to +125 °C. The component holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Adjustable output voltage capability ranging from 2.5 V to 36 V via external resistor network
• High precision performance with ±0.4% initial accuracy specification
• Automotive-grade reliability certified under AEC-Q100 standards
• Wide cathode current operation spanning 1 mA to 100 mA

Applications

• Precision voltage regulation in automotive electronic systems
• Reference voltage source for switching power supplies
• Feedback control loops in industrial power management circuits

Procurement Notes

Verify the specific suffix 'IYDT' corresponds to the required 8-SOIC package and reel packaging configuration. Confirm that the ±0.4% accuracy grade meets design requirements, as other grades may exist within the family. Ensure the AEC-Q100 qualification aligns with target automotive application standards. Check RoHS compliance status for environmental regulations. Validate thermal performance within the specified -40 °C to +125 °C range for the intended environment.

Selection Notes

Select this component when high precision and automotive qualification are required for shunt reference applications. The 8-SOIC package suits surface-mount assembly processes. Consider the 100 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 0.2 Ω dynamic impedance for load regulation requirements. Ensure the 36 V maximum input voltage exceeds the circuit's peak operating levels.

Part Context

The TL1431IYDT belongs to the TL1431 series of adjustable shunt voltage references from STMicroelectronics. This series is designed for applications requiring stable reference voltages with precise tolerance. The IYDT designation indicates the specific package type and tape-and-reel delivery method. It serves as a critical component in power supply feedback networks and voltage monitoring circuits.

Replacement Considerations

Consult official substitution lists for equivalent parts with matching accuracy and package dimensions.