TL431ACDBZRVL

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable, Precision, Shunt Regulator
• Package: SOT-23
• 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
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Dropout Voltage: 1.5V typical at 10mA load current

Detailed Pin Configuration

The TL431ACDBZRVL is a three-terminal 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.
3. Reference (R): Provides the regulated output voltage.

Functional Features

• Programmable Output Voltage: The TL431ACDBZRVL allows for adjustable output voltages within the specified range.
• Precision Voltage Reference: It provides a highly accurate and stable reference voltage for various applications.
• Shunt Regulator: The device regulates the output voltage by shunting excess current to the ground.

Advantages and Disadvantages

Advantages: - Wide operating voltage range - High precision and stability - Low temperature coefficient - Small package size

Disadvantages: - Requires an external resistor network for precise voltage selection - Limited output current capability

Working Principles

The TL431ACDBZRVL operates as a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage at the Anode (A) pin. By adjusting the current flowing through the device, it maintains a constant voltage across the Cathode (K) and Anode (A) pins.

Detailed Application Field Plans

The TL431ACDBZRVL finds applications in various fields, including: 1. Power Supplies: It is used as a voltage reference in linear and switching power supplies. 2. Battery Chargers: The device ensures accurate voltage regulation during battery charging. 3. Audio Amplifiers: It provides stable biasing voltages for audio amplifier circuits. 4. Voltage Monitors: It can be used to monitor and control voltage levels in electronic systems. 5. LED Drivers: The TL431ACDBZRVL helps regulate the current supplied to LEDs.

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the TL431ACDBZRVL are: - TLVH431: Low-voltage version with an adjustable output voltage range of 1.24V to 6V. - TL432: Similar functionality but available in different package options. - LM4040: Precision shunt voltage reference with fixed output voltage options.

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