IRU1240CSTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: TO-263-5 (D2PAK)

Essence: The IRU1240CSTR is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1240CSTR is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.75V to 18V
• Output Voltage Range: 1.25V to 16V
• Maximum Output Current: 12A
• Dropout Voltage: 0.45V at 12A
• Quiescent Current: 10mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1240CSTR has the following pin configuration:

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| | | GND | |___________| | | | VOUT | |___________| | | | VIN | |___________| | | | ADJ | |___________| | | | FB | |___________| | | | EN | |___________| ```

Functional Features

• High Efficiency: The IRU1240CSTR offers high efficiency, minimizing power loss and maximizing battery life in portable devices.
• Low Dropout Voltage: With a low dropout voltage of 0.45V at 12A, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted within a range of 1.25V to 16V, providing flexibility for different applications.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown Protection: In case of excessive temperature rise, the thermal shutdown feature activates, preventing damage to the IC and connected components.

Advantages and Disadvantages

Advantages: - High efficiency - Adjustable output voltage - Overcurrent and thermal protection - Wide input voltage range

Disadvantages: - Dropout voltage may limit performance in low voltage applications - Limited maximum output current compared to some other voltage regulators

Working Principles

The IRU1240CSTR operates as a linear voltage regulator. It regulates the output voltage by comparing it with a reference voltage and adjusting the internal pass transistor accordingly. The feedback pin (FB) is used to sense the output voltage and provide feedback to the control circuitry. By adjusting the resistance connected to the ADJ pin, the output voltage can be set within the specified range.

Detailed Application Field Plans

The IRU1240CSTR is commonly used in various electronic devices and systems that require a stable and regulated power supply. Some typical application fields include:

1. Automotive Electronics: Used in automotive infotainment systems, engine control units, and lighting systems.
2. Industrial Automation: Employed in motor control systems, PLCs (Programmable Logic Controllers), and power supplies for industrial equipment.
3. Consumer Electronics: Utilized in audio/video equipment, gaming consoles, and home automation systems.
4. Telecommunications: Integrated into base stations, routers, and network switches.
5. Renewable Energy Systems: Applied in solar inverters and wind turbine control systems.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar characteristics and pin configuration.
2. LT1083: Provides higher output current capability and lower dropout voltage compared to the IRU1240CSTR.
3. LM7805: Fixed output voltage regulator with a maximum output current of 1A.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

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