TS431IZ-AP

Overview

The TS431IZ-AP is a low-voltage, three-terminal adjustable shunt voltage reference manufactured by STMicroelectronics. It operates within an output voltage range of 1.24 V to 6 V and features a typical initial accuracy of ±2%. The device supports a wide cathode current operating range from 60 μA to 30 mA with a maximum input voltage of 6 V. It exhibits a temperature coefficient of 100 ppm/°C and maintains stability across an extended temperature range of -40°C to 125°C.

Feature Summary

• Low-voltage operation capability starting at 1.24 V
• Wide cathode current operating range for flexible design
• Typically stable for any capacitive loads
• ESD protection compliant with Human Body Model and Machine Model standards

Applications

• Regulating 3.3 V switching power supplies when driving optocouplers
• Precision voltage references in low-voltage electronic circuits
• Battery-powered devices requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'IZ' against official STMicroelectronics documentation to confirm package type and tolerance specifications. Ensure compatibility with TO-92-3 through-hole mounting requirements. Cross-reference datasheet revisions to confirm RoHS compliance status and lead-free manufacturing details before finalizing procurement orders.

Selection Notes

Select this component for applications requiring lower minimum operating voltages compared to standard TL431 references. Consider its suitability for designs needing precise regulation between 1.24 V and 6 V. Evaluate the ±2% accuracy against system requirements and verify thermal performance within the specified -40°C to 125°C ambient temperature range.

Part Context

The TS431 series represents STMicroelectronics' solution for low-voltage shunt voltage references. It serves as a specialized alternative to traditional TL431 devices, offering improved performance at lower supply voltages. This family is designed to meet the demands of modern compact electronics where space and voltage headroom are limited constraints.

Replacement Considerations

Public confirmed substitute part numbers: None.