The TL431AIU148H is a precision adjustable shunt regulator manufactured by Vishay. It is a three-terminal adjustable regulator offering excellent temperature stability and high accuracy. The device functions as a low-temperature-coefficient zener with a sharp turn-on characteristic.

Applications:

• Voltage Monitoring: Over-voltage and under-voltage detection circuits.
• Precision Current Sources: Used in constant current regulators and LED drivers.
• Error Amplifiers: Employed in switching power supplies and linear regulators.
• Shunt Regulators: Provides stable voltage reference in various electronic circuits.
• Comparator Applications: Used as a comparator with adjustable threshold.

Features:

• Programmable Output Voltage: Adjustable output voltage via external resistors.
• Wide Operating Current Range: Suitable for various current requirements.
• Low Temperature Coefficient: Provides stable performance across temperature variations.
• Low Dynamic Output Impedance: Ensures stable output voltage under varying load conditions.
• Sink Current Capability: Capable of sinking current, making it versatile for various applications.
• Precision Reference: Provides a highly accurate voltage reference.

Benefits:

• High Accuracy: Ensures precise voltage regulation and monitoring.
• Stable Performance: Low temperature coefficient guarantees consistent performance.
• Versatile: Suitable for a wide range of applications due to adjustable output voltage and sink current capability.
• Cost-Effective: Provides a low-cost solution for voltage regulation and monitoring.
• Simplified Design: Reduces component count and simplifies circuit design.

Technical Specifications:

• Reference Voltage: 2.5 V (typical)
• Adjustable Output Voltage Range: Vref to 36 V
• Operating Cathode Current: 1 mA to 100 mA
• Temperature Coefficient: Typically 14 ppm/°C
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23

The TL431AIU148H is a highly versatile and accurate adjustable shunt regulator ideal for applications requiring stable and precise voltage regulation and monitoring. Its programmability and excellent temperature stability make it suitable for a wide range of electronic circuits.