TL431BIDBVRG4

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 - Low Temperature Drift - Small Package Size

Package: SOT-23 (3-Pin)

Essence: The TL431BIDBVRG4 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 performance.

Packaging/Quantity: The TL431BIDBVRG4 is typically available in reels, with 3000 units per reel.

Specifications

• Reference Voltage: 2.495V to 36V
• Operating Current Range: 1mA to 100mA
• Temperature Range: -40°C to +85°C
• Initial Accuracy: ±0.5%
• Temperature Drift: ±50ppm/°C

Pin Configuration

The TL431BIDBVRG4 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 regulated output voltage.

Functional Features

• Adjustable Output Voltage: The TL431BIDBVRG4 allows for precise adjustment of the output voltage according to the application requirements.
• Voltage Regulation: It maintains a stable reference voltage regardless of changes in input voltage or load conditions.
• Low Dynamic Output Impedance: The device exhibits low impedance, ensuring minimal voltage fluctuations under varying load conditions.
• Wide Operating Current Range: It can operate within a wide range of current levels, making it suitable for various applications.
• High Accuracy: The TL431BIDBVRG4 provides a highly accurate reference voltage, ensuring precise regulation in electronic circuits.
• Low Temperature Drift: It exhibits minimal voltage variation with temperature changes, enhancing stability across different operating conditions.
• Small Package Size: The SOT-23 package offers compact dimensions, making it suitable for space-constrained designs.

Advantages and Disadvantages

Advantages: - Precise voltage regulation - Wide operating current range - High accuracy and stability - Compact package size

Disadvantages: - Limited maximum output voltage (36V) - Requires external components for proper operation

Working Principles

The TL431BIDBVRG4 operates as a shunt regulator by comparing the reference voltage at the Reference pin with an internal voltage divider network. It adjusts the current flowing through the cathode to maintain a stable output voltage. By varying the resistance connected to the Reference pin, the output voltage can be adjusted within the specified range.

Detailed Application Field Plans

The TL431BIDBVRG4 finds applications in various fields, including:

1. Power Supplies: It is commonly used in power supply circuits to regulate output voltages and ensure stable operation.
2. Battery Charging: The TL431BIDBVRG4 can be employed in battery charging circuits to control the charging voltage and prevent overcharging.
3. Voltage References: It serves as a precise voltage reference in analog and digital circuits, ensuring accurate signal processing.
4. Audio Amplifiers: The device can be utilized in audio amplifier circuits to provide stable biasing voltages and improve overall performance.
5. LED Drivers: It finds application in LED driver circuits to regulate the current and maintain consistent brightness levels.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL431BIDBVRG4 include:

1. TLV431AIDBZR: Adjustable Precision Shunt Regulator, SOT-23 package.
2. LM4040AIM3-2.5/NOPB: Precision Micropower Shunt Voltage Reference, SOT-23 package.
3. REF3030AIDBZT: Precision Voltage Reference, SOT-23 package.

These alternatives can be considered based on specific requirements and availability.

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