IRU1209CS

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: SOP-8 (Small Outline Package)

Essence: The IRU1209CS is a voltage regulator IC that provides stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1209CS is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.25V to 16V
• Maximum Output Current: 3A
• Dropout Voltage: 300mV at 3A
• Line Regulation: ±0.02%
• Load Regulation: ±0.1%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1209CS has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VOUT NC |-- Pin 2: No Connection --| ADJ NC |-- Pin 3: No Connection --| NC NC |-- Pin 4: No Connection --| NC NC |-- Pin 5: No Connection --| NC NC |-- Pin 6: No Connection --| NC NC |-- Pin 7: No Connection --| NC NC |-- Pin 8: No Connection |___________| ```

Functional Features

• High Efficiency: The IRU1209CS offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a dropout voltage of only 300mV at 3A, the IRU1209CS can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage of the IRU1209CS can be adjusted within a wide range, allowing flexibility in various applications.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown Protection: To prevent overheating, the IRU1209CS includes thermal shutdown protection, automatically shutting down the device if the temperature exceeds a safe threshold.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption. - Adjustable output voltage allows for versatile applications. - Overcurrent and thermal shutdown protection enhance safety and reliability.

Disadvantages: - Limited maximum output current of 3A may not be suitable for high-power applications. - Dropout voltage of 300mV may affect performance in low-voltage scenarios.

Working Principles

The IRU1209CS operates as a linear voltage regulator. It takes an input voltage within the specified range and regulates it to provide a stable output voltage. The internal circuitry adjusts the output voltage based on the feedback received from the ADJ pin. By comparing the feedback voltage with a reference voltage, the IC adjusts the output voltage accordingly. The overcurrent and thermal shutdown protection mechanisms ensure the safe operation of the device and the connected circuitry.

Detailed Application Field Plans

The IRU1209CS finds applications in various electronic devices that require a stable and regulated power supply. Some potential application fields include: 1. Consumer Electronics: Used in smartphones, tablets, and portable media players to regulate the battery voltage and power the internal components. 2. Automotive Electronics: Employed in automotive systems such as infotainment systems, navigation units, and engine control modules to provide regulated power for reliable operation. 3. Industrial Automation: Used in industrial control systems, motor drives, and robotics to ensure stable voltage supply for precise control and operation. 4. Telecommunications: Utilized in networking equipment, routers, and switches to regulate the power supply and maintain reliable communication.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar characteristics and pin configuration.
2. LT1085: A high-current linear voltage regulator capable of delivering up to 3A output current.
3. LM7805: A fixed-output voltage regulator providing a stable 5V output for various applications.
4. TPS7A4700: An ultra-low-noise, high-PSRR (Power Supply Rejection Ratio) linear voltage regulator suitable for sensitive audio and measurement applications.

(Note: This list is not exhaustive and serves as an example of alternative models.)

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