KD1084ADT25R

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: TO-220, 3-pin package

Essence: The KD1084ADT25R is a voltage regulator IC that provides a stable output voltage with high precision and low dropout voltage.

Packaging/Quantity: The KD1084ADT25R is typically sold in reels or tubes containing a specified quantity of ICs.

Specifications

The KD1084ADT25R has the following specifications:

• Input Voltage Range: 2.5V to 30V
• Output Voltage Range: 1.25V to 29V
• Dropout Voltage: 1.3V (typical)
• Output Current: Up to 5A
• Line Regulation: 0.015% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The KD1084ADT25R has three pins:

1. Input (VIN): This pin is used to connect the input voltage to the IC.
2. Output (VOUT): This pin provides the regulated output voltage.
3. Ground (GND): This pin is connected to the ground reference.

Functional Features

• High Precision: The KD1084ADT25R provides a highly accurate and stable output voltage, making it suitable for applications requiring precise voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 1.3V, this IC can regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted within a wide range using external resistors.
• Overcurrent Protection: The IC incorporates overcurrent protection to prevent damage to the device and the connected circuitry in case of excessive current flow.
• Thermal Shutdown Protection: To prevent overheating, the KD1084ADT25R has built-in thermal shutdown protection that disables the regulator when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection

Disadvantages: - Relatively high power dissipation (due to dropout voltage)

Working Principles

The KD1084ADT25R is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass transistor.

Detailed Application Field Plans

The KD1084ADT25R is commonly used in various applications where precise voltage regulation is required. Some typical application fields include:

1. Power Supplies: The IC can be used in power supply circuits to provide a stable voltage for electronic devices.
2. Battery-Powered Systems: It is suitable for battery-powered systems that require efficient voltage regulation to maximize battery life.
3. Automotive Electronics: The KD1084ADT25R can be utilized in automotive electronics to regulate voltages for various components.
4. Industrial Control Systems: It finds applications in industrial control systems where accurate voltage regulation is crucial for reliable operation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the KD1084ADT25R are:

1. LM317: A popular adjustable voltage regulator IC with a wide input voltage range and adjustable output voltage.
2. LT1084: A low dropout voltage regulator with high precision and adjustable output voltage.
3. LM1117: A series of low dropout voltage regulators available in various fixed output voltages.

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

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