The TL431-AE2-R is a precision adjustable shunt regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). This three-terminal device functions as a programmable zener diode and is widely used in voltage regulation, voltage reference, and error amplifier applications.

Applications

• Linear regulators
• Switching power supplies
• Voltage monitoring
• Overvoltage protection
• Precision current sources

Features

• Programmable output voltage
• Low output noise
• Low dynamic output impedance
• Sink current capability: 1mA to 100mA
• Wide operating temperature range

Benefits

• Precision Voltage Regulation: Provides a stable and accurate reference voltage for various circuits.
• Adjustable Output: The output voltage can be easily adjusted using external resistors.
• Stable Performance: Low output noise and dynamic impedance ensure stable operation.
• Versatile Application: Suitable for a wide range of voltage regulation and reference applications.
• Cost-Effective Solution: Offers a reliable and cost-efficient solution for voltage control.

Additional Details

The TL431-AE2-R's output voltage can be set to any value between Vref (typically 2.5V) and 36V using two external resistors. The device operates by sinking current from the cathode to the anode, and its internal circuitry maintains a constant voltage drop between the reference input and the anode. Key parameters to consider include the reference voltage accuracy, cathode current range, and temperature stability. Consult the UTC datasheet for detailed specifications, application notes, and recommended circuit configurations to ensure optimal performance and prevent exceeding maximum ratings. Proper component selection and layout are important for minimizing noise and ensuring accurate voltage regulation.