L7924CV

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: Fixed Output, Negative Polarity
Package: TO-220
Essence: Linear Voltage Regulator
Packaging/Quantity: Tube/50 pieces

Specifications

Input Voltage: -35V to -10V
Output Voltage: -24V
Output Current: 1A
Dropout Voltage: 2V
Line Regulation: 0.04%/V
Load Regulation: 0.3%
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7924CV IC has three pins:

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

Functional Features

Provides a fixed -24V output voltage.
Regulates the input voltage within specified limits.
Protects against overcurrent and thermal overload.
Low dropout voltage ensures efficient regulation.
Suitable for various applications requiring a negative voltage supply.

Advantages

Simple and easy to use.
Stable and reliable voltage regulation.
Wide operating temperature range.
Overcurrent and thermal protection.
Compact TO-220 package for easy integration.

Disadvantages

Fixed output voltage may not be suitable for all applications.
Dropout voltage of 2V may limit efficiency in low voltage scenarios.
Limited output current of 1A may not meet high-power requirements.

Working Principles

The L7924CV is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the feedback voltage with a reference voltage and adjusts the pass transistor to maintain a stable output voltage. The regulator operates in the negative polarity, converting the input voltage to a fixed -24V output.

Detailed Application Field Plans

The L7924CV is commonly used in applications requiring a regulated -24V supply. Some typical application fields include:

Industrial control systems
Audio amplifiers
Power supplies for analog circuits
Negative voltage biasing circuits
Instrumentation equipment

Detailed and Complete Alternative Models

LM7924: Similar specifications and pin configuration, manufactured by Texas Instruments.
MC79L24: Comparable performance, available in TO-92 package, produced by ON Semiconductor.
KA7924: Equivalent characteristics, offered by Fairchild Semiconductor.

Note: This list is not exhaustive, and there may be other alternative models available from different manufacturers.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L7924CV v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L7924CV in technical solutions:

Q: What is L7924CV? A: L7924CV is a voltage regulator IC that provides a fixed output voltage of -24V.
Q: What is the input voltage range for L7924CV? A: The input voltage range for L7924CV is typically between -35V and -10V.
Q: What is the maximum output current of L7924CV? A: The maximum output current of L7924CV is 1A.
Q: Can L7924CV handle higher input voltages than -35V? A: No, it is not recommended to exceed the specified input voltage range as it may damage the IC.
Q: Is L7924CV suitable for both AC and DC input voltages? A: Yes, L7924CV can regulate both AC and DC input voltages within its specified range.
Q: Can I use L7924CV to step down positive voltages? A: No, L7924CV is specifically designed for negative voltage regulation. For positive voltage regulation, you would need a different IC.
Q: What is the dropout voltage of L7924CV? A: The typical dropout voltage of L7924CV is around 2V.
Q: Does L7924CV require any external components for operation? A: Yes, L7924CV requires input and output capacitors for stability and filtering purposes. Refer to the datasheet for recommended values.
Q: Can L7924CV handle short-circuit conditions at the output? A: No, L7924CV does not have built-in short-circuit protection. It is recommended to use external current-limiting measures to protect the IC.
Q: What are some typical applications of L7924CV? A: L7924CV is commonly used in various technical solutions such as audio amplifiers, power supplies, and industrial control systems where a regulated -24V voltage is required.

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