L7808ABD2T

Product Overview

Category: Voltage Regulator
Use: To regulate and stabilize the output voltage in electronic circuits
Characteristics:
- Fixed output voltage of 8V
- Maximum output current of 1.5A
- Low dropout voltage
- Thermal overload protection
Package: TO-220
Essence: Integrated circuit (IC)
Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

Input Voltage Range: 10V to 35V
Output Voltage: 8V
Output Current: Up to 1.5A
Dropout Voltage: 2V (typical)
Line Regulation: 0.04% (typical)
Load Regulation: 0.3% (typical)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7808ABD2T has three pins:

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

Functional Features

Regulates the output voltage to a fixed 8V regardless of input variations.
Provides thermal overload protection, preventing damage due to excessive heat.
Low dropout voltage ensures efficient regulation even with low input voltages.
Suitable for various applications requiring a stable 8V power supply.

Advantages

Simple and easy to use.
Reliable and stable output voltage.
Wide input voltage range allows flexibility in different applications.
Thermal overload protection enhances safety and durability.

Disadvantages

Fixed output voltage limits versatility in applications requiring different voltages.
Dropout voltage may affect efficiency in low input voltage scenarios.

Working Principles

The L7808ABD2T is a linear voltage regulator that uses a series 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 8V output. The thermal overload protection feature ensures safe operation by monitoring the temperature and shutting down the device if it exceeds the specified limit.

Detailed Application Field Plans

The L7808ABD2T is commonly used in various electronic applications, including:

Power supply circuits for microcontrollers and other digital ICs.
Audio amplifiers and preamplifiers.
Battery charging circuits.
Voltage regulators for automotive electronics.
Industrial control systems.

Detailed and Complete Alternative Models

LM7808: Similar specifications and pin configuration, available in different packages.
MC7808: Comparable performance, suitable for similar applications.
UA7808: Alternative option with similar characteristics and pin configuration.

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

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L7808ABD2T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L7808ABD2T in technical solutions:

Q: What is the L7808ABD2T? A: The L7808ABD2T is a voltage regulator IC that provides a fixed output voltage of +8V.
Q: What is the input voltage range for the L7808ABD2T? A: The input voltage range for the L7808ABD2T is typically between 10V and 35V.
Q: What is the maximum output current of the L7808ABD2T? A: The maximum output current of the L7808ABD2T is 1.5A.
Q: Can the L7808ABD2T be used to regulate negative voltages? A: No, the L7808ABD2T is designed to regulate positive voltages only.
Q: Is it necessary to use an external heat sink with the L7808ABD2T? A: It depends on the power dissipation and ambient temperature. If the power dissipation is high or the ambient temperature is high, then an external heat sink may be required.
Q: Can the L7808ABD2T be used in automotive applications? A: Yes, the L7808ABD2T is suitable for automotive applications as it can operate within the specified temperature range (-40°C to +125°C).
Q: How does the L7808ABD2T handle overcurrent protection? A: The L7808ABD2T has built-in thermal shutdown and current limiting features to protect against overcurrent conditions.
Q: Can multiple L7808ABD2T regulators be connected in parallel to increase the output current? A: Yes, multiple L7808ABD2T regulators can be connected in parallel to share the load and increase the overall output current.
Q: What is the typical dropout voltage of the L7808ABD2T? A: The typical dropout voltage of the L7808ABD2T is around 2V.
Q: Can the L7808ABD2T be used in battery-powered applications? A: Yes, the L7808ABD2T can be used in battery-powered applications as it has a low quiescent current and operates efficiently with low input voltages.

Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.