TL431BCPKG3

Product Overview

• Category: Integrated Circuit
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: TO-92, 3-Pin
• Essence: TL431BCPKG3 is a voltage reference integrated circuit that provides a highly accurate and adjustable output voltage.
• Packaging/Quantity: Available in tape and reel packaging with 2,500 units per reel.

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Reference Voltage Tolerance: ±1%
• Cathode Current Range: 1mA to 100mA
• Anode Current Range: 0.4mA to 150mA

Detailed Pin Configuration

The TL431BCPKG3 has three pins:

1. Anode (A): Connected to the positive terminal of the power supply.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Provides the adjustable reference voltage.

Functional Features

• Adjustable Output Voltage: The TL431BCPKG3 allows precise adjustment of the output voltage within the specified range.
• High Accuracy: With a reference voltage tolerance of ±1%, it provides reliable and consistent performance.
• Low Power Consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
• Short-Circuit Protection: It features built-in short-circuit protection, preventing damage to the device and the connected circuitry.

Advantages and Disadvantages

Advantages: - Wide range of adjustable output voltages - High accuracy and stability - Low power consumption - Short-circuit protection

Disadvantages: - Limited output current capacity (up to 100mA) - Requires external components for precise voltage adjustment

Working Principles

The TL431BCPKG3 is based on the principle of a shunt regulator. It compares the reference voltage at the Reference pin with the voltage across a voltage divider connected to the Anode and Cathode pins. By adjusting the resistance in the voltage divider, the output voltage can be precisely set.

Detailed Application Field Plans

The TL431BCPKG3 finds applications in various fields, including:

1. Power Supplies: It is commonly used in power supply circuits to provide stable and adjustable reference voltages.
2. Battery Charging: The device is utilized in battery charging circuits to regulate the charging voltage accurately.
3. Voltage Monitoring: It can be employed in voltage monitoring circuits to trigger alarms or shutdown systems when the voltage exceeds a certain threshold.
4. Audio Amplifiers: The TL431BCPKG3 is used in audio amplifier circuits to bias transistors and maintain stable operating conditions.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL431BCPKG3 are:

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

These alternatives can be considered based on specific requirements and application constraints.

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