TL431BCDR2

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable, Precision, Shunt Regulator
• Package: SOIC-8
• Essence: TL431BCDR2 is a three-terminal adjustable precision shunt regulator. It can be used to provide a stable reference voltage in various electronic circuits.
• Packaging/Quantity: TL431BCDR2 is typically sold in reels of 2500 units.

Specifications

• Reference Voltage Range: 2.495V to 36V
• Operating Current Range: 1mA to 100mA
• Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% (Typical)
• Load Regulation: 0.4% (Typical)
• Output Voltage Tolerance: ±1%
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

TL431BCDR2 has eight pins arranged as follows:

```

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| | --| REF K |-- Cathode --| ADJ A |-- Anode --| GND N |-- Ground |___________| ```

Functional Features

• Adjustable Output Voltage: The output voltage of TL431BCDR2 can be easily adjusted using external resistors.
• Precision Voltage Reference: TL431BCDR2 provides a highly accurate and stable reference voltage for precise circuit operation.
• Shunt Regulator: It acts as a shunt regulator by maintaining a constant voltage drop across the device terminals.
• Low Power Consumption: TL431BCDR2 consumes very low power, making it suitable for battery-powered applications.
• Wide Operating Temperature Range: It can operate reliably in a wide temperature range, making it suitable for various environments.

Advantages and Disadvantages

Advantages: - High precision and stability - Adjustable output voltage - Low power consumption - Wide operating temperature range

Disadvantages: - Requires external resistors for voltage adjustment - Limited maximum cathode current

Working Principles

TL431BCDR2 works based on the principle of a shunt regulator. It compares the reference voltage at the REF pin with the voltage across the ADJ and K pins. By adjusting the voltage at the ADJ pin, the output voltage can be set to a desired value. The TL431BCDR2 maintains a constant voltage drop between the ADJ and K pins, ensuring a stable output voltage.

Detailed Application Field Plans

TL431BCDR2 finds applications in various electronic circuits where a stable reference voltage is required. Some common application areas include:

1. Voltage regulators
2. Switching power supplies
3. Battery chargers
4. Audio amplifiers
5. LED drivers
6. Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for TL431BCDR2 are:

1. TL431ACDR2: Similar specifications and pin configuration, but with tighter voltage tolerance.
2. LM4040CIZ-4.1: Fixed 4.1V voltage reference with similar package and pin configuration.
3. LT1009CZ-2.5: Fixed 2.5V voltage reference with similar characteristics and package.

These alternative models provide similar functionality and can be used depending on specific requirements.

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