TL431BIDRE4

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 Stability - Low Temperature Drift - Fast Turn-On Response

Package: SOIC-8

Essence: The TL431BIDRE4 is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to regulate voltage levels and ensure accurate and stable operation.

Packaging/Quantity: The TL431BIDRE4 is available in a standard SOIC-8 package, which stands for Small Outline Integrated Circuit with 8 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Reference Voltage: Adjustable from 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)
• Dynamic Output Impedance: 0.22Ω (typical)
• Cathode Current: 1mA to 100mA

Pin Configuration

The TL431BIDRE4 has eight pins arranged as follows:

```

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| | --| 1 |-- Anode --| 2 |-- Cathode --| 3 |-- Reference --| 4 |-- N/C (No Connection) --| 5 |-- N/C (No Connection) --| 6 |-- N/C (No Connection) --| 7 |-- N/C (No Connection) --| 8 |-- N/C (No Connection) |____| ```

Functional Features

• Adjustable Output Voltage: The TL431BIDRE4 allows the user to set the desired output voltage by connecting external resistors.
• Precision Reference: It provides a highly accurate and stable reference voltage, ensuring precise regulation in various applications.
• Low Dynamic Output Impedance: The low output impedance enables efficient voltage regulation even under varying load conditions.
• Wide Operating Current Range: The device can operate within a wide range of current levels, making it suitable for diverse applications.
• Fast Turn-On Response: The TL431BIDRE4 quickly responds to changes in input voltage, providing rapid regulation.

Advantages and Disadvantages

Advantages: - High accuracy and stability - Adjustable output voltage - Wide operating current range - Low temperature drift - Fast response time

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

Working Principles

The TL431BIDRE4 operates as a shunt regulator, maintaining a stable reference voltage between its reference and cathode pins. By adjusting the resistance connected to the reference pin, the output voltage can be precisely set. When the input voltage exceeds the reference voltage, the device starts conducting, effectively shunting excess current to maintain the desired output voltage.

Detailed Application Field Plans

The TL431BIDRE4 finds extensive use in various electronic systems and circuits, including but not limited to: 1. Power Supplies: It is commonly employed in voltage regulators and power management circuits to ensure stable and accurate output voltages. 2. Battery Charging Systems: The TL431BIDRE4 helps regulate charging voltages in battery management systems, preventing overcharging or undercharging. 3. Audio Amplifiers: It is used in audio circuits to provide precise biasing and voltage stabilization, enhancing audio quality. 4. Industrial Control Systems: The device is utilized in control circuits to maintain stable reference voltages for accurate measurements and control signals. 5. LED Lighting: It helps regulate the current flowing through LEDs, ensuring consistent brightness and extending their lifespan.

Detailed and Complete Alternative Models

1. TL431AIDBZR: Similar to TL431BIDRE4 but available in a SOT-23 package.
2. TLV431BIDBVR: A low-voltage version of TL431BIDRE4 with an adjustable output voltage range from 0.8V to 6V.
3. LM4040CIZ-10.0: A precision shunt voltage reference with a fixed output voltage of 10V.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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