IR3084MPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Current limit protection - Thermal shutdown protection

Package: TO-220

Essence: The IR3084MPBF is a voltage regulator IC designed for various applications that require stable and regulated power supply.

Packaging/Quantity: The IR3084MPBF is available in a TO-220 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 24V
• Output Current: Up to 3A
• Dropout Voltage: 300mV at 3A
• Line Regulation: ±1%
• Load Regulation: ±1%
• Quiescent Current: 100µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The IR3084MPBF has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VOUT ADJ |-- Pin 2: Adjust (Output Voltage Control) --| VREF FB |-- Pin 3: Feedback (Voltage Reference) --| EN NC |-- Pin 4: Enable (Shutdown Control) |___________| ```

Functional Features

• High Efficiency: The IR3084MPBF offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 300mV at 3A, it can maintain a stable output even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 4.5V to 28V, making it suitable for a wide range of applications.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 0.8V to 24V, providing flexibility in meeting specific requirements.
• Current Limit Protection: The IC incorporates current limit protection, preventing excessive current flow and protecting connected devices.
• Thermal Shutdown Protection: In case of excessive temperature rise, the thermal shutdown feature activates, safeguarding the IC from damage.

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Adjustable output voltage - Current limit and thermal shutdown protection

Disadvantages: - Dropout voltage may not be suitable for ultra-low power applications - Limited output current capacity (up to 3A)

Working Principles

The IR3084MPBF operates as a linear voltage regulator. It regulates the output voltage by adjusting the resistance between the VOUT and ADJ pins based on the feedback received from the VREF and FB pins. By comparing the output voltage with the reference voltage, the IC adjusts its internal circuitry to maintain a stable output voltage.

Detailed Application Field Plans

The IR3084MPBF is commonly used in various applications that require regulated power supply, such as: 1. Power management in industrial equipment 2. Automotive electronics 3. Telecommunications systems 4. Consumer electronics 5. Computer peripherals 6. LED lighting systems

Detailed and Complete Alternative Models

Some alternative models to the IR3084MPBF include: - LM317: A popular adjustable linear voltage regulator with similar features. - LT1084: A low dropout linear voltage regulator capable of delivering higher output currents. - TPS7A47: A high-performance, low-noise linear voltage regulator suitable for sensitive applications.

These alternative models offer similar functionality and can be considered based on specific requirements and availability.

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