TL431BVDR2G

Product Overview

Category

The TL431BVDR2G belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Provides a stable reference voltage for precise voltage regulation.
• Offers high accuracy and low temperature coefficient.
• Can be easily programmed for specific voltage levels.
• Operates over a wide temperature range.
• Requires minimal external components for operation.

Package

The TL431BVDR2G is available in a small SOT-23 package.

Essence

The essence of TL431BVDR2G lies in its ability to provide a stable and accurate reference voltage, making it an essential component in voltage regulation applications.

Packaging/Quantity

The TL431BVDR2G is typically packaged in reels containing 3000 units.

Specifications

• Reference Voltage: 2.5V
• Operating Voltage Range: 2.5V to 36V
• Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Initial Accuracy: ±1%
• Temperature Coefficient: 50ppm/°C

Detailed Pin Configuration

The TL431BVDR2G has three pins:

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

Functional Features

• Voltage Regulation: The TL431BVDR2G compares the reference voltage with the input voltage and adjusts the current flowing through the cathode to maintain a constant output voltage.
• Programmable Output: By connecting external resistors, the TL431BVDR2G can be programmed to provide different reference voltages.
• Short Circuit Protection: It offers short circuit protection by limiting the output current in case of a fault condition.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating voltage range.
• Low temperature coefficient.
• Simple circuit implementation.
• Cost-effective solution.

Disadvantages

• Limited output current capability.
• Requires external components for proper operation.
• Sensitivity to noise and fluctuations in the input voltage.

Working Principles

The TL431BVDR2G operates based on the principle of feedback control. It compares the reference voltage with the input voltage and adjusts the cathode current accordingly to maintain a constant output voltage. By varying the current through the cathode, the TL431BVDR2G regulates the voltage across the load.

Detailed Application Field Plans

The TL431BVDR2G finds applications in various fields, including:

1. Power Supplies: It is used in linear power supplies to provide stable reference voltages for voltage regulation.
2. Battery Charging Systems: It ensures precise voltage regulation in battery charging circuits.
3. Audio Amplifiers: The TL431BVDR2G helps maintain accurate biasing voltages in audio amplifier circuits.
4. Voltage Monitors: It is employed in voltage monitoring circuits to detect overvoltage or undervoltage conditions.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the TL431BVDR2G are:

1. LM4040: A precision voltage reference with similar characteristics and package options.
2. REF3030: Another voltage reference offering high accuracy and low temperature coefficient.
3. LT1009: A precision shunt regulator with adjustable reference voltage.

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

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