STMicroelectronics TL431ACZ Precision Programmable Reference

The TL431ACZ from STMicroelectronics is a versatile, precision programmable voltage reference that is designed to provide a reliable solution for voltage regulation in a wide array of electronic applications. This three-terminal adjustable shunt regulator, with a specified thermal stability over applicable automotive, commercial, and military temperature ranges, stands as a robust component for your circuit designs.

The device features a guaranteed reference voltage tolerance at 25°C, which can be set to any value between Vref (approximately 2.495 V) and 36 V with two external resistors. This adjustable output allows the TL431ACZ to be used in a multitude of voltage regulation applications, including power supplies, battery chargers, and voltage monitors, offering a high degree of flexibility for designers.

Key Features:

• Voltage Range: Programmable output from 2.495 V to 36 V over the temperature range of -40°C to 125°C.
• High Precision: Reference voltage tolerance is typically ±0.5% at 25°C, and ±1% over the full temperature range, ensuring tight regulation for sensitive applications.
• Low Dynamic Output Impedance: The TL431ACZ has a typical dynamic output impedance of 0.2 ohms, providing stable reverse current regulation over a wide range of operating conditions.
• Sink Current Capability: Capable of sinking current up to 100 mA, making it suitable for a variety of load conditions.
• TO-92 Package: Encased in a compact TO-92 package, it is ideal for space-constrained applications while ensuring ease of integration into a variety of circuit layouts.

With its ease of use, including a typical dynamic impedance of 0.2Ω, and a wide operating temperature range, the TL431ACZ ensures excellent reliability for control and compensation loops in switching regulators. This makes it an essential component for power management solutions where precision voltage regulation is critical.

Whether you are designing a new power supply or looking to enhance the performance of an existing system, the TL431ACZ from STMicroelectronics offers a high-performance, cost-effective solution that can be tailored to meet your specific needs.

For detailed specifications, application circuits, and additional information, refer to the official datasheets and technical documentation provided by STMicroelectronics.