TL431CCT

Overview

The TL431CCT is an adjustable micropower shunt voltage reference manufactured by STMicroelectronics. It operates within a supply voltage range of 2.5 V to 36 V and provides an adjustable output voltage across the same span. The device features an initial accuracy of ±2% and supports a maximum cathode current of 100 mA with a minimum operating current of 1 mA. It utilizes a SOT-323-6 surface-mount package and is rated for operation between -40 °C and +125 °C.

Feature Summary

• Adjustable output voltage capability using external resistors
• High temperature stability over extended industrial ranges
• Low dynamic impedance for stable regulation

Applications

• Precision voltage references in power supplies
• Programmable linear regulators
• DC/DC converter feedback loops

Procurement Notes

Verify the specific suffix 'CCT' against the official STMicroelectronics datasheet to confirm the SOT-323-6 packaging and ±2% tolerance grade. Ensure the ordering code matches the required automotive or industrial temperature specifications. Cross-reference the manufacturer part number with distributor listings to avoid confusion with similar TL431 variants that may have different pinouts or performance characteristics.

Selection Notes

Select this component when a compact surface-mount solution is required for precision voltage referencing. The SOT-323-6 package offers space efficiency compared to traditional through-hole options. Consider the ±2% initial accuracy and thermal stability requirements relative to the application's precision needs. Verify compatibility with the system's operating voltage range and current sink capabilities.

Part Context

This component belongs to the TL431 family of programmable shunt voltage references, widely used for regulating output voltages in switching power supplies and linear regulators. The TL431 series serves as a versatile alternative to Zener diodes, offering better temperature stability and lower dynamic impedance. STMicroelectronics produces this variant to meet industry standards for reliable voltage reference applications.