TS431ARCX-Z

Overview

The TS431ARCX-Z is a low-voltage, three-terminal adjustable shunt voltage reference manufactured by Taiwan Semiconductor. It operates within a voltage range of 1.24 V to 6 V and supports cathode currents from 60 μA to 30 mA. The device features an output impedance of 0.2 Ω and a temperature coefficient of 100 ppm/°C. It offers precision levels of 2%, 1%, and 0.5% at 25°C. Designed for automotive applications, it holds AEC-Q100 qualification in the SOT23-5 package.

Feature Summary

• Adjustable output voltage capability between 1.24 V and 6 V using external resistors
• AEC-Q100 qualified for automotive grade reliability
• Low output impedance typically stable for any capacitive loads
• ESD protection rated at 2 kV human body model and 200 V machine model

Applications

• Regulating 3.3 V switching power supplies
• Driving optocouplers in feedback loops
• General purpose voltage reference circuits

Procurement Notes

Verify the specific suffix 'Z' against the manufacturer's official documentation to confirm compliance with RoHS directives and halogen-free status. Ensure the ordering part number matches the required tolerance level (2%, 1%, or 0.5%) as specified in the datasheet, since suffixes may denote different precision grades rather than functional changes. Confirm the package type is SOT23-5 before procurement.

Selection Notes

Select this component when designing low-voltage systems requiring operation down to 1.24 V, which is lower than standard TL431 alternatives. It is suitable for space-constrained designs due to its surface-mount packaging. Consider the 100 ppm/°C temperature coefficient for thermal stability requirements. Verify that the required cathode current falls within the 60 μA to 30 mA operating range for optimal performance.

Part Context

The TS431 series represents a family of low-voltage shunt references designed to outperform traditional TL431 devices in low-power applications. Manufactured by Taiwan Semiconductor, these components are optimized for modern power management ICs. The TS431ARCX-Z specifically denotes the automotive-grade variant, ensuring robustness for vehicle electronics while maintaining compatibility with standard shunt regulator circuit topologies.

Replacement Considerations

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