L7905CV

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: Fixed Negative Voltage Regulator, -5V Output
Package: TO-220
Essence: Linear Regulator
Packaging/Quantity: 1 piece per package

Specifications

Input Voltage: Up to -35V
Output Voltage: -5V
Output Current: Up to 1A
Dropout Voltage: 2V (typical)
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The L7905CV has three pins:

Input Pin (IN): Connects to the input voltage source.
Ground Pin (GND): Connected to the ground reference.
Output Pin (OUT): Provides the regulated -5V output.

Functional Features

Voltage Regulation: The L7905CV regulates the input voltage to a fixed -5V output.
Short Circuit Protection: Built-in protection against short circuits.
Thermal Overload Protection: Safeguards the IC from excessive heat.
Low Dropout Voltage: Minimal voltage drop between input and output.

Advantages and Disadvantages

Advantages: - Simple and easy to use. - Reliable voltage regulation. - Suitable for various applications. - Cost-effective solution.

Disadvantages: - Limited output current capacity. - Requires external capacitors for stability.

Working Principles

The L7905CV is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable -5V output.

Detailed Application Field Plans

The L7905CV is commonly used in various electronic devices and applications, including: - Power supplies - Audio amplifiers - Industrial control systems - Automotive electronics - Battery charging circuits

Detailed and Complete Alternative Models

Some alternative models to the L7905CV include: - LM7905: Similar fixed -5V voltage regulator from Texas Instruments. - MC7905: Negative voltage regulator from ON Semiconductor. - UA7905: Fixed negative voltage regulator from Fairchild Semiconductor.

These alternatives offer similar functionality and can be used as replacements for the L7905CV in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L7905CV v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L7905CV in technical solutions:

Q: What is L7905CV? A: L7905CV is a voltage regulator IC that provides a fixed output voltage of -5V.
Q: What is the input voltage range for L7905CV? A: The input voltage range for L7905CV is typically between -7V and -25V.
Q: What is the maximum output current of L7905CV? A: The maximum output current of L7905CV is 1A.
Q: Can L7905CV be used to regulate positive voltages? A: No, L7905CV is specifically designed to regulate negative voltages only.
Q: How does L7905CV handle thermal protection? A: L7905CV has built-in thermal shutdown protection that prevents the IC from overheating.
Q: Can L7905CV be used in automotive applications? A: Yes, L7905CV can be used in automotive applications as long as the operating conditions are within its specified range.
Q: Is an external heat sink required for L7905CV? A: It depends on the power dissipation and ambient temperature. If the power dissipation is high or the ambient temperature is high, an external heat sink may be necessary.
Q: Can L7905CV be used in parallel to increase the output current? A: No, L7905CV should not be used in parallel to increase the output current. It is recommended to use a higher current-rated voltage regulator instead.
Q: What is the typical dropout voltage of L7905CV? A: The typical dropout voltage of L7905CV is around 2V.
Q: Can L7905CV be used in battery-powered applications? A: Yes, L7905CV can be used in battery-powered applications as long as the input voltage is within its specified range and the power dissipation is managed properly.

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