TL431CL3T

The TL431CL3T is a precision voltage reference and adjustable shunt regulator manufactured by STMicroelectronics. It is designed for a variety of applications, including power supply regulation, voltage reference, and feedback control in switching power supplies.

Key Features:

1. Adjustable Output Voltage: The TL431 allows for an adjustable output voltage range from 2.5V to 36V, making it versatile for different circuit requirements. The output voltage can be set using two external resistors.

2. High Accuracy: The device boasts a typical reference voltage accuracy of ±1%, which ensures reliable performance in precision applications.

3. Temperature Stability: The TL431 is designed to maintain stable performance over a wide temperature range, with a temperature coefficient of approximately 30 ppm/°C, ensuring that the output voltage remains consistent even with temperature variations.

4. Low Output Impedance: The device features low output impedance, which helps maintain stable output voltage under varying load conditions.

5. Wide Operating Current Range: The TL431 operates with a wide range of current, typically from 1 mA to 100 mA, allowing it to be used in various circuit configurations.

6. Fast Response Time: The device has a fast response time to changes in load or input voltage, making it suitable for dynamic applications.

7. Compact Package: The TL431CL3T is available in a compact TO-92 package, which is suitable for space-constrained designs. This package type is also easy to handle and integrate into various PCB layouts.

8. Applications: Common applications include power supply circuits, battery chargers, and as a reference voltage source in analog circuits. It is also used in feedback loops for voltage regulation in switching power supplies.

9. Pin Configuration: The TL431 typically features three pins:

   • Ref (Reference): This pin is used to set the output voltage.
   • Anode: This pin connects to the load and is where the output voltage is taken.
   • Cathode: This pin connects to the input voltage source.

Electrical Characteristics:

• Supply Voltage (Vref): 2.5V (typical)
• Output Voltage Range: 2.5V to 36V
• Reference Current: Typically around 1 mA
• Operating Temperature Range: -40°C to +125°C

Conclusion:

The TL431CL3T from STMicroelectronics is a highly versatile and reliable component for voltage regulation and reference applications. Its adjustable output, high accuracy, and compact design make it an excellent choice for engineers looking to implement precise voltage control in their electronic designs.