TL431BIDG4

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: SOIC-8

Essence: The TL431BIDG4 is a precision shunt regulator that can be used to provide a stable reference voltage in various electronic circuits.

Packaging/Quantity: The TL431BIDG4 is available in a standard SOIC-8 package. It 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)
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

The TL431BIDG4 has eight pins arranged as follows:

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| | --|____|-- Anode (A) --|____|-- Cathode (K) --|____|-- Reference (R) --|____|-- Compensation (C) |____| ```

Functional Features

• Adjustable Output Voltage: The TL431BIDG4 allows the user to set the desired output voltage by connecting external resistors.
• Precision Voltage Reference: It provides a highly accurate and stable reference voltage for precise circuit operation.
• Low Dynamic Output Impedance: The low dynamic output impedance ensures stability even with varying load conditions.
• Wide Operating Current Range: The device can operate within a wide range of current levels, making it suitable for various applications.
• High Accuracy and Temperature Stability: The TL431BIDG4 offers high accuracy and temperature stability, ensuring reliable performance across different operating conditions.

Advantages and Disadvantages

Advantages: - Easy to use and implement in circuits - Wide range of operating currents - High accuracy and temperature stability - Adjustable output voltage

Disadvantages: - Requires external resistors for voltage adjustment - Limited output current capability (up to 100mA)

Working Principles

The TL431BIDG4 operates as a shunt regulator by comparing the reference voltage at the Reference (R) pin with the voltage at the Cathode (K) pin. It adjusts the current flowing through the Cathode (K) pin to maintain a stable output voltage. By connecting external resistors, the desired output voltage can be set.

Detailed Application Field Plans

The TL431BIDG4 is widely used in various electronic circuits where a stable reference voltage is required. Some common application areas include:

1. Power Supplies: The TL431BIDG4 can be used as a voltage reference in power supply circuits to ensure stable output voltages.
2. Battery Charging Systems: It is employed in battery charging circuits to regulate the charging voltage and protect the batteries from overcharging.
3. Voltage Regulators: The TL431BIDG4 can be utilized as a precision voltage regulator in electronic devices to maintain a constant voltage level.
4. Audio Amplifiers: It finds application in audio amplifiers to provide a stable bias voltage for improved audio quality.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL431BIDG4 are:

1. LM4040: Precision Shunt Voltage Reference
2. LT1236: Micropower Precision Shunt Voltage Reference
3. REF3030: Low-Noise, Low-Dropout Voltage Reference
4. MAX6126: Ultra-High-Precision Voltage Reference

These alternative models can be considered based on specific requirements and design constraints.

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