TS2431ILT

Overview

The TS2431ILT is an adjustable shunt voltage reference manufactured by STMicroelectronics, housed in a SOT-23-3 surface-mount 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 ±2% at 25 °C and operates within an industrial temperature range of -40 °C to +105 °C. Key electrical specifications include a maximum sink current of 100 mA, a minimum cathode current of 1 mA, and a temperature coefficient of 100 ppm/°C. It serves as a performance-compatible alternative to industry-standard TL431 devices.

Feature Summary

• Adjustable output voltage capability spanning 2.5 V to 24 V using external resistors
• Compact SOT-23-3L surface mount package designed for space-constrained applications
• Guaranteed temperature stability across the full industrial operating range

Applications

• Precision voltage references in battery-powered equipment
• Power supply feedback loops requiring compact form factors
• Industrial control systems needing stable reference voltages

Procurement Notes

Verify the specific tolerance grade (±2%, ±1%, or ±0.5%) required for the design, as the base part number may vary by precision level. Confirm that the SOT-23-3L footprint matches the PCB layout. Ensure the application circuit maintains the cathode current between 1 mA and 100 mA for proper regulation. Check RoHS compliance status if restricted substances are a concern.

Selection Notes

Select this component when a small surface-mount voltage reference is needed with an adjustable output up to 24 V. It is suitable for designs replacing TL431 where board space is limited. Consider the ±2% initial accuracy and 100 ppm/°C temperature coefficient against system requirements. Verify that the operating temperature range of -40 °C to +105 °C meets environmental conditions.

Part Context

The TS2431 series belongs to STMicroelectronics' portfolio of adjustable shunt voltage references. These devices are engineered to offer high reliability and stability in power management circuits. The TS2431 family includes variants with different accuracy grades to suit various precision requirements while maintaining a consistent pinout and package style for easy integration.

Replacement Considerations

The datasheet explicitly states performance compatibility with the industry-standard TL431. Designers should verify pinout alignment and thermal characteristics when substituting other adjustable shunt references.