KA78L08AMTF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Fixed Output Voltage
• Package: TO-220F
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 10V to 35V
• Output Voltage: 8V
• Output Current: 100mA
• Dropout Voltage: 2V
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The KA78L08AMTF has three pins:

1. Input Pin (VIN): Connects to the input voltage source.
2. Ground Pin (GND): Connected to the ground reference.
3. Output Pin (VOUT): Provides the regulated output voltage.

Functional Features

• Voltage Regulation: The KA78L08AMTF regulates the input voltage to a fixed 8V output voltage.
• Low Dropout: It has a low dropout voltage of 2V, allowing it to operate efficiently even when the input voltage is close to the desired output voltage.
• Short Circuit Protection: The IC includes built-in short circuit protection, preventing damage in case of a short circuit on the output side.
• Thermal Overload Protection: It incorporates thermal overload protection, which shuts down the device if the temperature exceeds the safe operating limits.

Advantages and Disadvantages

Advantages

• Simple and easy to use.
• Compact size and lightweight.
• Low dropout voltage ensures efficient operation.
• Built-in short circuit and thermal overload protection enhance reliability.

Disadvantages

• Limited output current capability (100mA).
• Fixed output voltage may not be suitable for all applications.

Working Principles

The KA78L08AMTF is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage (8V) with the feedback voltage and adjusts the pass transistor's resistance to maintain a constant output voltage. The dropout voltage is minimized by using a low saturation voltage transistor.

Detailed Application Field Plans

The KA78L08AMTF is commonly used in various electronic devices and systems, including:

1. Consumer Electronics: It can be found in televisions, audio equipment, and home appliances.
2. Automotive: Used in automotive electronics for voltage regulation in various subsystems.
3. Industrial Control Systems: Provides stable voltage supply in industrial control systems.
4. Power Supplies: Used as a voltage regulator in power supply circuits.
5. Communication Systems: Found in communication devices such as routers, modems, and wireless access points.

Detailed and Complete Alternative Models

• LM7808: A popular alternative from Texas Instruments.
• MC78L08: Another alternative from ON Semiconductor.
• UA78L08: An alternative option from Fairchild Semiconductor.

These alternatives have similar specifications and pin configurations, making them suitable replacements for the KA78L08AMTF in various applications.

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