TL431IDM

Product Overview

• Category: Integrated Circuit
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: SOIC-8
• Essence: Programmable Precision Reference
• Packaging/Quantity: Tape & Reel, 2500 pieces per reel

Specifications

The TL431IDM is an integrated circuit voltage reference that provides a highly accurate and adjustable output voltage. It is commonly used in various electronic circuits where precise voltage regulation is required. The device comes in a small outline integrated circuit (SOIC) package with eight pins.

Pin Configuration

The TL431IDM has the following pin configuration:

1. Anode
2. Cathode
3. Reference Voltage
4. Adjust
5. NC (No Connection)
6. NC (No Connection)
7. NC (No Connection)
8. Cathode

Functional Features

The TL431IDM offers several functional features that make it suitable for voltage reference applications. These include:

• High accuracy: The device provides a highly accurate reference voltage with low temperature coefficient.
• Adjustable output: The output voltage can be easily adjusted using external resistors to meet specific requirements.
• Low dynamic impedance: The TL431IDM exhibits low dynamic impedance, making it suitable for stable voltage regulation.
• Wide operating range: The device operates over a wide temperature range and can handle a wide input voltage range.

Advantages and Disadvantages

Advantages of using the TL431IDM include its high accuracy, adjustable output, and wide operating range. However, there are a few disadvantages to consider:

• Limited current handling capability: The TL431IDM has a limited current handling capability, which may restrict its use in high-power applications.
• External components required: To achieve the desired output voltage, external resistors are needed, which adds complexity to the circuit design.

Working Principles

The TL431IDM operates based on the principle of a shunt regulator. It compares the reference voltage with an adjustable voltage divider and adjusts the current flowing through the device to maintain a constant output voltage. By changing the resistance values in the voltage divider, the output voltage can be adjusted.

Detailed Application Field Plans

The TL431IDM finds applications in various fields where precise voltage regulation is required. Some of the common application areas include:

1. Power supplies: The TL431IDM can be used in power supply circuits to provide stable and accurate reference voltages for voltage regulation.
2. Battery charging circuits: It can be employed in battery charging circuits to maintain a constant charging voltage.
3. Audio amplifiers: The device can be utilized in audio amplifier circuits to provide a stable bias voltage for improved performance.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the TL431IDM. Some of the popular alternatives include:

• LM4040
• LT1009
• REF02
• MAX6126

These alternative models can be considered based on specific requirements and design constraints.

In conclusion, the TL431IDM is a versatile integrated circuit voltage reference that offers high accuracy and adjustable output voltage. Its wide operating range and functional features make it suitable for various applications in different fields. However, designers should consider its limitations, such as limited current handling capability and the need for external components.