STMicroelectronics TL431ACDT Precision Shunt Voltage Reference

The TL431ACDT from STMicroelectronics is a three-terminal adjustable shunt voltage reference with guaranteed temperature stability over the entire operating temperature range. This high-performance component is designed to offer a reliable solution for voltage regulation in a wide array of electronic applications, making it a versatile choice for designers and engineers.

With an output voltage range that can be set to any value between 2.495 V and 36 V with two external resistors, the TL431ACDT provides excellent flexibility. This product features a typical output impedance of 0.2 ohms, contributing to its stable and precise voltage regulation capabilities. The low output impedance, along with the sharp turn-on characteristics, makes this voltage reference an ideal choice for switch-mode power supplies, linear regulators, and adjustable power supplies.

One of the key attributes of the TL431ACDT is its impressive accuracy. The reference voltage tolerance is specified for both room temperature and over the full operating temperature range, ensuring consistent performance and reliability under varying conditions. The device's temperature coefficient, typically rated at 50 ppm/°C, further underscores its precision over temperature variations.

The TL431ACDT is housed in a small surface-mount package, specifically the SOT-23, which allows for efficient use of PCB space. This compact form factor makes it suitable for high-density electronic assemblies and applications where space is at a premium. Additionally, the device's lead-free and RoHS-compliant construction aligns with modern environmental standards, reducing the ecological footprint of electronic products.

In summary, the STMicroelectronics TL431ACDT is a high-quality, adjustable shunt voltage reference that offers excellent stability, accuracy, and flexibility. Its small size and compliance with environmental standards make it an ideal choice for a wide range of applications, including power supplies, battery chargers, and voltage monitoring systems, where consistent voltage control is critical.

For detailed specifications, application notes, and further information, designers are encouraged to consult the datasheet and support materials provided by STMicroelectronics.