TS3431CILT

Overview

The TS3431CILT 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 1.24 V to 24 V, set via an external resistor divider. The device features an initial accuracy of ±0.25% at 25 °C and a temperature coefficient of 100 ppm/°C. It operates within a supply voltage range up to 25 V, with a maximum sink current of 100 mA and a minimum operating current of 400 µA. The unit supports an industrial temperature range from -40 °C to +125 °C.

Feature Summary

• Adjustable output voltage capability ranging from 1.24 V to 24 V using external resistors
• High precision with ±0.25% initial accuracy and low temperature drift
• Wide operational temperature range suitable for industrial environments
• Compact SOT-23-3 surface mount packaging for space-constrained designs

Applications

• Precision voltage regulation in battery-powered devices
• Reference voltage source for analog-to-digital converters
• Over-voltage protection circuits
• Linear regulator feedback networks

Procurement Notes

Verify the specific suffix 'CILT' corresponds to the required tolerance and packaging format upon ordering. Confirm that the SOT-23-3 footprint matches the target PCB layout. Ensure the selected component meets the required thermal management specifications for the intended operating environment. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when a compact, high-precision adjustable reference is needed. The ±0.25% accuracy suits applications requiring tight voltage control. Consider the 100 mA sink capability for driving moderate loads. Verify that the 100 ppm/°C temperature coefficient aligns with system stability requirements across the full industrial temperature range.

Part Context

The TS3431CILT belongs to the TS3431 series of adjustable shunt voltage references. This family offers performance compatible with industry-standard TL431 devices but in a smaller form factor. The series includes various tolerance options, with the CILT variant providing the highest precision level available in the lineup.

Replacement Considerations

The TS3431CILT is functionally compatible with the TL431 family. Verify pinout alignment and electrical parameters before substitution. Ensure the replacement part meets the same temperature and accuracy requirements.