DG390BDJ-E3

Product Overview

• Category: Electronic Component
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: TO-220AB
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Output Current: Up to 1.5A
• Quiescent Current: 2.5mA (typical)
• Dropout Voltage: 1.3V (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The DG390BDJ-E3 has a standard TO-220AB package with three pins:

1. Pin 1 (IN): Input voltage pin.
2. Pin 2 (GND): Ground reference pin.
3. Pin 3 (OUT): Output voltage pin.

Functional Features

• High Efficiency: The DG390BDJ-E3 offers high efficiency, ensuring minimal power loss during voltage regulation.
• Low Power Consumption: With a low quiescent current of only 2.5mA, the device minimizes power consumption when in standby or idle mode.
• Wide Input Voltage Range: The regulator can handle input voltages ranging from 4.5V to 40V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 1.25V to 37V, providing flexibility for different power requirements.
• Protection Features: The DG390BDJ-E3 includes built-in protection features such as thermal shutdown, overcurrent protection, and reverse polarity protection.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power loss. - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility. - Built-in protection features enhance reliability.

Disadvantages: - Limited output current of up to 1.5A may not be sufficient for high-power applications. - Dropout voltage of 1.3V may affect performance in low voltage scenarios.

Working Principles

The DG390BDJ-E3 is a voltage regulator that maintains a stable output voltage regardless of fluctuations in the input voltage. It achieves this by using a feedback mechanism that continuously adjusts the internal circuitry to maintain the desired output voltage. The device utilizes a combination of switching and linear regulation techniques to achieve high efficiency and low power consumption.

Detailed Application Field Plans

The DG390BDJ-E3 is commonly used in various applications, including:

1. Power Supplies: It can be employed in power supply circuits to regulate the output voltage and ensure stable power delivery to other components.
2. Automotive Electronics: The regulator finds application in automotive electronics, providing reliable voltage regulation for various systems such as infotainment, lighting, and sensors.
3. Industrial Control Systems: It is suitable for industrial control systems, where precise voltage regulation is crucial for the proper functioning of machinery and equipment.
4. Telecommunications: The DG390BDJ-E3 can be utilized in telecommunications equipment to maintain consistent voltage levels and prevent damage to sensitive components.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar specifications and pin configuration.
2. LT1084: Another voltage regulator offering adjustable output voltage and higher output current capability.
3. LM7805: A fixed voltage regulator with a 5V output, suitable for applications requiring a specific voltage level.

These alternative models provide similar functionality and can be considered as substitutes for the DG390BDJ-E3 based on specific application requirements.

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