IRU1117-25CDTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: DFN (Dual Flat No-Lead)

Essence: The IRU1117-25CDTR is a low dropout voltage regulator designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1117-25CDTR is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage: 2.5V
• Output Current: Up to 800mA
• Dropout Voltage: 300mV typical at 800mA
• Line Regulation: 0.04% typical
• Load Regulation: 0.2% typical
• Quiescent Current: 120µA typical
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1117-25CDTR has the following pin configuration:

```

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| | --| VIN GND |-- --| VOUT EN |-- |___________| ```

• VIN: Input voltage pin
• GND: Ground pin
• VOUT: Output voltage pin
• EN: Enable pin (active high)

Functional Features

1. Low Dropout Voltage: The IRU1117-25CDTR exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.

2. High Output Current Capability: With an output current capability of up to 800mA, the IRU1117-25CDTR can power a wide range of electronic devices.

3. Thermal Shutdown Protection: The regulator includes thermal shutdown protection, which prevents damage to the IC by shutting it down in case of excessive temperature.

4. Short Circuit Current Limit: The IRU1117-25CDTR has a built-in short circuit current limit feature that protects the device from excessive current flow during a short circuit condition.

5. Fast Transient Response: This voltage regulator exhibits a fast transient response, ensuring stability and accuracy in voltage regulation during sudden load changes.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient voltage regulation. - High output current capability allows for powering various electronic devices. - Thermal shutdown protection prevents damage due to overheating. - Short circuit current limit protects the device during short circuit conditions. - Fast transient response ensures stability during load changes.

Disadvantages: - Limited to an output voltage of 2.5V. - Quiescent current of 120µA may consume some power even when the device is not actively supplying current.

Working Principles

The IRU1117-25CDTR operates as a linear voltage regulator. It takes an input voltage within the specified range and regulates it to a stable 2.5V output voltage. The regulator uses a pass transistor to control the output voltage based on the feedback received from the output pin. By comparing the output voltage with a reference voltage, the regulator adjusts the pass transistor to maintain a constant output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The IRU1117-25CDTR finds applications in various electronic devices that require a stable and regulated 2.5V power supply. Some common application fields include:

1. Mobile Devices: The voltage regulator can be used in smartphones, tablets, and other portable electronic devices to provide a stable power source for the internal circuitry.

2. Embedded Systems: The IRU1117-25CDTR can be employed in embedded systems, such as microcontrollers and IoT devices, to ensure reliable and consistent power supply.

3. Consumer Electronics: It can be utilized in audio/video equipment, gaming consoles, and other consumer electronics to maintain a steady voltage for optimal performance.

4. Automotive Electronics: The regulator can be integrated into automotive applications, including infotainment systems, navigation devices, and engine control units, to deliver a regulated power supply.

Detailed and Complete Alternative Models

1. LM1117-2.5: A similar low dropout voltage regulator with a fixed 2.5V output voltage. It offers comparable features and specifications to the IRU1117-25CDTR.

2. LT1763-2.5: Another alternative with a fixed 2.5V output voltage. This regulator provides low dropout voltage, high output current, and excellent line/load regulation.

3. TPS79625: A voltage regulator with a fixed 2.5V output voltage. It