The TL431ID from Texas Instruments is a versatile and precision programmable reference that operates as a low-voltage shunt regulator. With a default voltage reference of 2.495 volts, the TL431ID can be programmed with two external resistors for a desired shunt voltage between 2.495 and 36 volts. This makes it an ideal component for adjustable power supplies, battery chargers, and other precision voltage regulation applications.

Key Features

• Programmable Output Voltage: The TL431ID offers a broad programmable voltage range which can be set by the user with external resistive dividers.
• Low Output Noise: It features a low output noise characteristic, making it suitable for noise-sensitive electronic applications.
• High Stability: With a temperature compensated design, the TL431ID ensures high stability over the full operating temperature range.
• Low Dynamic Output Impedance: The dynamic output impedance of the TL431ID is typically 0.22 ohms, contributing to stable load regulation in a variety of conditions.
• Wide Operating Current Range: It can handle a cathode current range from 1 mA to 100 mA, providing flexibility in different circuit designs.

Applications

The TL431ID is commonly used in a variety of applications, including:

• Adjustable Voltage and Current Regulators
• Switching Power Supplies
• Digital Voltmeters
• Op-Amp Circuitry
• Battery Chargers
• Automotive Electronics

Package and Quality

The device is offered in an 8-pin SOIC package, which is suitable for surface-mount technology (SMT), ensuring compact and reliable integration into various electronic assemblies. Texas Instruments ensures high-quality standards, and the TL431ID is no exception, providing consistent performance for industrial and commercial applications.

Environmental and Regulatory Compliance

The TL431ID complies with RoHS standards, ensuring that it is free from hazardous substances. This compliance makes it a suitable choice for environmentally sensitive applications and helps in meeting global regulatory requirements.