IRU431LCL3TR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short circuit current limit

Package: SOT-223

Essence: The IRU431LCL3TR is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The IRU431LCL3TR is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.25V to 16V
• Dropout Voltage: 0.6V (typical)
• Output Current: 1A (maximum)
• Quiescent Current: 120µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IRU431LCL3TR has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the system.
2. ADJ (Adjust): Used to set the desired output voltage.
3. VIN (Input Voltage): Connects to the input voltage source.
4. VOUT (Output Voltage): Provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: The IRU431LCL3TR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1A, this voltage regulator can power a wide range of electronic devices.
• Adjustable Output Voltage: The ADJ pin allows users to adjust the output voltage according to their specific requirements.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Short Circuit Current Limit: The IRU431LCL3TR has a built-in short circuit current limit feature that protects the device from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation even with low input voltages. - High output current capability allows for powering various electronic devices. - Adjustable output voltage provides flexibility for different applications. - Thermal shutdown protection prevents overheating and damage. - Short circuit current limit protects the device from damage during short circuits.

Disadvantages: - Limited maximum output current compared to some other voltage regulators. - SOT-223 package may not be suitable for all applications requiring voltage regulation.

Working Principles

The IRU431LCL3TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from the output. The difference between these voltages is amplified and used to control the pass transistor, adjusting its resistance to maintain a stable output voltage.

Detailed Application Field Plans

The IRU431LCL3TR can be used in various applications that require stable voltage regulation, such as: - Power supplies for microcontrollers and other digital ICs - Battery-powered devices - Automotive electronics - Industrial control systems - Audio amplifiers

Detailed and Complete Alternative Models

Some alternative models to the IRU431LCL3TR include: - LM317: A popular adjustable voltage regulator with similar features. - LT1084: A high-current, adjustable voltage regulator with low dropout voltage. - LM7805: A fixed 5V voltage regulator commonly used in many applications. - LM1117: A low dropout voltage regulator available in various fixed output voltages.

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

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