TL431AQDBVRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage reference and shunt regulator
• Characteristics: Adjustable precision, low voltage reference, high accuracy, low quiescent current
• Package: SOT-23-6 package
• Essence: Precision adjustable shunt regulator
• Packaging/Quantity: Tape and reel packaging, 3000 units per reel

Specifications

The TL431AQDBVRE4 is a precision adjustable shunt regulator IC that provides a highly accurate voltage reference. It is designed to be used in various applications where a stable voltage reference or a shunt regulator is required. The key specifications of the TL431AQDBVRE4 are as follows:

• Reference Voltage Range: 2.495V to 36V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Reference Voltage Tolerance: ±1%
• Quiescent Current: 1.0mA (typical)

Pin Configuration

The TL431AQDBVRE4 is a 6-pin SOT-23 package with the following pin configuration:

1. Anode (A)
2. Cathode (K)
3. Reference Voltage (Vref)
4. N/C (No Connection)
5. N/C (No Connection)
6. N/C (No Connection)

Functional Features

The TL431AQDBVRE4 offers the following functional features:

• Adjustable Output Voltage: The reference voltage can be adjusted using external resistors to set the desired output voltage.
• High Accuracy: The TL431AQDBVRE4 provides a highly accurate reference voltage with a tolerance of ±1%.
• Low Quiescent Current: The IC has a low quiescent current of 1.0mA, making it suitable for low-power applications.
• Wide Operating Voltage Range: The TL431AQDBVRE4 can operate within a wide voltage range from 2.495V to 36V.

Advantages and Disadvantages

Advantages of the TL431AQDBVRE4 include:

• High accuracy and precision
• Adjustable output voltage
• Low quiescent current
• Wide operating voltage range

Disadvantages of the TL431AQDBVRE4 include:

• Limited output current capability (up to 100mA)
• Requires external resistors for voltage adjustment

Working Principles

The TL431AQDBVRE4 operates as a shunt regulator by comparing the reference voltage (Vref) with the feedback voltage. It adjusts the current flowing through the cathode (K) and anode (A) pins to maintain a stable output voltage. By adjusting the external resistors connected to the reference voltage pin, the desired output voltage can be set.

Detailed Application Field Plans

The TL431AQDBVRE4 is widely used in various applications, including:

1. Power Supplies: It is commonly used as a voltage reference in power supply circuits to provide stable and accurate voltages.
2. Battery Charging Systems: The TL431AQDBVRE4 can be used in battery charging systems to regulate the charging voltage and ensure proper charging.
3. Audio Amplifiers: It can be employed in audio amplifier circuits to provide a stable bias voltage for improved audio performance.
4. Industrial Control Systems: The IC finds application in industrial control systems where precise voltage references are required for accurate measurements and control.

Detailed and Complete Alternative Models

Some alternative models to the TL431AQDBVRE4 include:

1. TL431BQDBZR: Similar to TL431AQDBVRE4, but with a different package (SOT-23-3).
2. TLV431BQDBZR: A low-voltage version of the TL431AQDBVRE4, with a reference voltage range from 0.6V to 6V.
3. LM4040AIM3-2.5/NOPB: A precision shunt regulator IC with a fixed 2.5V output voltage.

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

In conclusion, the TL431AQDBVRE4 is a precision adjustable shunt regulator IC that provides a highly accurate voltage reference. It offers adjustable output voltage, high accuracy, and low quiescent current. With its wide operating voltage range, it finds applications in power supplies, battery charging systems, audio amplifiers, and industrial control systems. Alternative models such as TL431BQDBZR, TLV431BQDBZR, and LM4040AIM3-2.5/NOPB can be considered based on specific needs.