AP78L05VL-A

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Fixed Output Voltage: 5V - Maximum Output Current: 100mA - Low Dropout Voltage: 2V - Thermal Overload Protection - Short Circuit Current Limiting - Wide Input Voltage Range: 7V to 25V - Small Package Size: TO-92

Package: TO-92

Essence: The AP78L05VL-A is a voltage regulator IC that provides a fixed output voltage of 5V. It is commonly used in electronic circuits to regulate and stabilize the voltage supply.

Packaging/Quantity: The AP78L05VL-A is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 7V to 25V
• Output Voltage: 5V (±4% tolerance)
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (maximum)
• Operating Temperature Range: -40°C to +125°C
• Thermal Resistance: 160°C/W (junction-to-ambient)

Pin Configuration

The AP78L05VL-A has three pins:

1. Input (IN): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (OUT): This pin provides the regulated 5V output voltage.

Functional Features

• Voltage Regulation: The AP78L05VL-A maintains a constant output voltage of 5V, even when the input voltage varies within the specified range.
• Thermal Overload Protection: The IC includes built-in protection against excessive heat, preventing damage to the device.
• Short Circuit Current Limiting: In case of a short circuit on the output side, the IC limits the current to protect itself and the connected components.
• Low Dropout Voltage: The dropout voltage of 2V ensures that the regulator can still provide a stable output voltage even when the input voltage is close to the desired output voltage.

Advantages

• Compact size and easy to integrate into various electronic circuits.
• Wide input voltage range allows for flexibility in different applications.
• Thermal overload protection ensures reliability and longevity of the IC.
• Low dropout voltage minimizes power dissipation and improves efficiency.

Disadvantages

• Limited maximum output current (up to 100mA), which may not be sufficient for high-power applications.
• Fixed output voltage of 5V may not be suitable for all voltage requirements.

Working Principles

The AP78L05VL-A is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage (5V) with the feedback voltage from the output and adjusts the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

The AP78L05VL-A is widely used in various electronic devices and applications, including but not limited to: - Battery-powered devices - Microcontrollers and digital logic circuits - Audio amplifiers and preamplifiers - LED lighting systems - Automotive electronics - Power supply modules

Alternative Models

There are several alternative models available that offer similar functionality to the AP78L05VL-A. Some popular alternatives include: - LM7805: A widely used voltage regulator IC with a fixed 5V output. - AMS1117-5.0: Another 5V voltage regulator IC with low dropout voltage. - LT1086: A high-current, adjustable voltage regulator IC.

These alternative models can be considered based on specific requirements and application needs.

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