The TL431SN3 is a precision adjustable shunt regulator manufactured by Cystech Electronics Corp. It is a three-terminal adjustable voltage reference with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors. This device has a typical output impedance of 0.2 Ω.

Applications:

• Voltage Regulation: Used in power supplies to provide stable and adjustable output voltages.
• Overvoltage Protection: Implemented in circuits to protect against excessive voltage levels.
• Current Limiting: Employed in circuits to limit current flow, preventing damage to components.
• Shunt Regulators: Provides a simple and effective shunt regulation in linear power supplies.
• Comparator Circuits: Can be used as a comparator in various control circuits.

Features:

• Programmable Output Voltage: Output voltage can be set using external resistors.
• Low Output Noise: Ensures stable and clean voltage regulation.
• Low Dynamic Output Impedance: Provides stable regulation under varying load conditions.
• Sink Current Capability: Can sink current, making it suitable for various applications.
• Wide Operating Voltage Range: Operates over a broad voltage range.

Benefits:

• Precise Voltage Regulation: Provides stable and accurate voltage regulation, essential for sensitive electronic circuits.
• Flexibility: Adjustable output voltage allows for use in a variety of applications.
• Protection of Components: Protects circuits from overvoltage and current surges.
• Stable Performance: Maintains stable performance under different operating conditions.
• Cost-Effective: Offers a reliable and affordable solution for voltage regulation.

Additional Details:

The TL431SN3 has a reference voltage of approximately 2.5V. It is typically available in a SOT-23 package. The operating temperature range is usually -40°C to +125°C. It features a cathode, anode, and reference pin for easy integration into circuits. Detailed electrical characteristics, thermal resistance, and package dimensions are available in datasheets.