TL431ACL5T

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Programmable Output Voltage - Low Dynamic Output Impedance - Wide Operating Current Range - High Accuracy and Temperature Stability

Package: SOT-23-5

Essence: The TL431ACL5T is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to regulate voltage levels.

Packaging/Quantity: The TL431ACL5T is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Reference Voltage: 2.495V to 36V
• Operating Current Range: 1mA to 100mA
• Temperature Range: -40°C to +85°C
• Initial Accuracy: ±1%
• Dynamic Output Impedance: 0.22Ω

Pin Configuration

The TL431ACL5T has five pins arranged as follows:

```

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| | --| REF |-- Pin 1 --| ANODE |-- Pin 2 --| CATH |-- Pin 3 --| K |-- Pin 4 --| NC |-- Pin 5 |_______| ```

Functional Features

• Adjustable Output Voltage: The TL431ACL5T allows for precise adjustment of the output voltage according to the application requirements.
• Programmable Shunt Regulator: It acts as a programmable shunt regulator by comparing the reference voltage with an external voltage source.
• Low Dynamic Output Impedance: The device maintains a low dynamic output impedance, ensuring stability and accuracy in voltage regulation.
• Wide Operating Current Range: The TL431ACL5T can operate within a wide range of current levels, making it suitable for various applications.
• High Accuracy and Temperature Stability: It offers high accuracy and temperature stability, ensuring reliable voltage regulation across different operating conditions.

Advantages

• Easy to use and integrate into electronic circuits
• Provides precise and stable reference voltage
• Wide operating current range allows for versatile applications
• High accuracy and temperature stability ensure reliable performance

Disadvantages

• Limited output current capability compared to other voltage regulators
• Requires external components for proper operation

Working Principles

The TL431ACL5T operates based on the principle of a shunt regulator. It compares the reference voltage (2.495V) with an external voltage source applied to the ANODE pin. By adjusting the voltage at the REF pin, the device regulates the output voltage at the CATHODE pin. The TL431ACL5T maintains a low dynamic output impedance, providing stable voltage regulation.

Application Field Plans

The TL431ACL5T finds applications in various fields, including:

1. Power Supplies: It is used in power supply circuits to regulate output voltages and improve stability.
2. Battery Charging Systems: The TL431ACL5T ensures accurate voltage regulation during battery charging processes.
3. Voltage Monitoring: It can be employed in voltage monitoring circuits to detect and control voltage levels.
4. Audio Amplifiers: The TL431ACL5T helps maintain stable voltage levels in audio amplifier circuits, enhancing audio quality.
5. LED Lighting: It is utilized in LED lighting systems to regulate the voltage supplied to LEDs, ensuring optimal brightness and longevity.

Alternative Models

Some alternative models that offer similar functionality to the TL431ACL5T include:

1. LM4040CIZ-2.5/NOPB
2. LT1009CZ#PBF
3. MAX6126AASA25+
4. REF3030AIDBZT
5. TS431IZT

These models can be considered as alternatives based on specific application requirements and availability.

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