TL431ACDBVT

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable, Precision, Shunt Regulator
• Package: SOT-23-5
• Essence: Programmable Precision Reference
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: 1mA to 100mA
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TL431ACDBVT is a 3-pin device with the following pin configuration: 1. Anode (A): Connected to the reference voltage input. 2. Cathode (K): Connected to the ground or negative supply rail. 3. Reference (R): Provides the regulated output voltage.

Functional Features

• Adjustable Output: The TL431ACDBVT allows for precise adjustment of the output voltage within the specified range.
• Precision: It provides a highly accurate reference voltage with low temperature coefficient and excellent long-term stability.
• Shunt Regulator: The device operates as a shunt regulator, maintaining a constant voltage drop across the reference terminal.
• Programmable: The TL431ACDBVT can be programmed using external resistors to set the desired output voltage.

Advantages and Disadvantages

Advantages: - Wide operating voltage range - High accuracy and precision - Low temperature coefficient - Easy to use and program - Small package size

Disadvantages: - Limited output current capability - Requires external components for proper operation

Working Principles

The TL431ACDBVT is based on the principle of a shunt regulator. It compares the reference voltage at the reference pin (R) with an internal voltage divider network. By adjusting the resistance connected to the reference pin, the output voltage can be precisely set. The TL431ACDBVT continuously monitors the output voltage and adjusts the current flowing through the reference pin to maintain a constant voltage drop.

Detailed Application Field Plans

The TL431ACDBVT is widely used in various applications, including: 1. Voltage Regulation: It is commonly used as a precision voltage reference in power supplies, battery chargers, and voltage regulators. 2. Feedback Control: It can be employed in feedback control circuits to stabilize and regulate voltages in amplifiers, motor drives, and audio equipment. 3. Overvoltage Protection: The TL431ACDBVT can be utilized as an overvoltage protection device to prevent damage to sensitive electronic components.

Detailed and Complete Alternative Models

Some alternative models that can be considered as substitutes for the TL431ACDBVT include: - TLV431AIDBVR - LM4040CIM3-2.5 - REF3030AIDBZT - LT1004CZ-1.2

Please note that these alternatives may have different specifications and pin configurations, so careful consideration should be given to ensure compatibility with the specific application requirements.

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