TL431AIDMR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage reference and shunt regulator
• Characteristics: Adjustable precision, low voltage reference, high accuracy
• Package: SOIC-8 (Small Outline Integrated Circuit)
• Essence: TL431AIDMR2G is a three-terminal adjustable precision shunt regulator that can be used as a voltage reference or as a shunt regulator to maintain a stable output voltage.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Temperature Stability: 50ppm/°C typical
• Package Type: SOIC-8

Detailed Pin Configuration

The TL431AIDMR2G has the following pin configuration:

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: The TL431AIDMR2G allows for precise adjustment of the output voltage using external resistors.
• Low Voltage Reference: It provides a stable reference voltage for various applications.
• High Accuracy: The TL431AIDMR2G offers high accuracy and stability over temperature and load variations.
• Short-Circuit Protection: It includes built-in short-circuit protection to prevent damage to the device.

Advantages and Disadvantages

Advantages

• Wide operating voltage range
• High accuracy and stability
• Adjustable output voltage
• Short-circuit protection

Disadvantages

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

Working Principles

The TL431AIDMR2G operates as a shunt regulator by comparing the reference voltage at the Reference (R) pin with an external voltage divider network. It adjusts the current flowing through the cathode (K) and anode (A) pins to maintain a stable output voltage. By changing the resistor values in the voltage divider, the output voltage can be adjusted.

Detailed Application Field Plans

The TL431AIDMR2G is widely used in various applications, including:

1. Voltage References: It provides a stable reference voltage for analog-to-digital converters, power supplies, and other precision circuits.
2. Battery Charging Systems: It is used in battery charging circuits to regulate the charging voltage and protect the battery from overcharging.
3. Switching Power Supplies: It is employed in switching power supply designs to provide accurate voltage regulation and improve overall system efficiency.
4. Audio Amplifiers: It is utilized in audio amplifier circuits to provide biasing and voltage stabilization.

Detailed and Complete Alternative Models

Some alternative models to TL431AIDMR2G include:

1. TLV431AIDBZR: SOT-23 package, adjustable precision shunt regulator.
2. LM4040CIM3-2.5/NOPB: SOT-23 package, precision micropower shunt voltage reference.
3. LT1634BCMS8-2.5#PBF: MSOP-8 package, precision shunt voltage reference.

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

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