IRU3137CSTRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: CSTRPBF (Compact Surface Mount Package)

Essence: The IRU3137CSTRPBF is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU3137CSTRPBF is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V - 18V
• Output Voltage Range: 1.25V - 16V
• Maximum Output Current: 3A
• Dropout Voltage: 300mV @ 3A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU3137CSTRPBF has the following pin configuration:

```

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| | --| VIN | --| GND | --| ADJ | --| VOUT | |___________| ```

Functional Features

1. High Efficiency: The IRU3137CSTRPBF offers high efficiency, minimizing power loss and maximizing battery life in portable devices.
2. Low Dropout Voltage: With a low dropout voltage of 300mV at 3A, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
3. Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor, allowing flexibility in different applications.
4. Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
5. Thermal Shutdown Protection: To prevent overheating, the IRU3137CSTRPBF includes thermal shutdown protection, automatically shutting down the device if the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Adjustable output voltage for versatile applications - Overcurrent and thermal protection ensure device safety

Disadvantages: - Dropout voltage may limit its use in low-power applications - Limited output current capacity compared to higher-rated regulators

Working Principles

The IRU3137CSTRPBF operates as a linear voltage regulator. It takes an input voltage and regulates it to a stable output voltage using internal control circuitry. The adjustable output voltage is achieved by connecting an external resistor between the ADJ pin and ground. The IC continuously monitors the output voltage and adjusts the internal circuitry to maintain a constant voltage level, compensating for changes in load or input voltage.

Detailed Application Field Plans

The IRU3137CSTRPBF finds applications in various electronic devices that require a regulated power supply. Some common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, and portable media players to provide a stable power source for the internal components.
2. Automotive Electronics: Integrated into automotive systems to regulate voltage for sensors, actuators, and other electronic components.
3. Industrial Control Systems: Employed in industrial automation and control systems to ensure reliable and stable power supply for critical equipment.
4. Telecommunications: Utilized in networking equipment, routers, and switches to maintain a consistent voltage level for optimal performance.

Detailed and Complete Alternative Models

1. LM317T: A popular alternative with similar characteristics and adjustable output voltage capability.
2. LT1084CP: Offers higher output current capacity and lower dropout voltage compared to the IRU3137CSTRPBF.
3. LM7805: A fixed-output voltage regulator with a 5V output, suitable for applications requiring a specific voltage level.

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

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