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L7924CV
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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:

  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

  • 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:

  1. Industrial control systems
  2. Audio amplifiers
  3. Power supplies for analog circuits
  4. Negative voltage biasing circuits
  5. 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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技術ソリューションにおける L7924CV の適用に関連する 10 件の一般的な質問と回答をリストします。

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

  1. Q: What is L7924CV? A: L7924CV is a voltage regulator IC that provides a fixed output voltage of -24V.

  2. Q: What is the input voltage range for L7924CV? A: The input voltage range for L7924CV is typically between -35V and -10V.

  3. Q: What is the maximum output current of L7924CV? A: The maximum output current of L7924CV is 1A.

  4. 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.

  5. 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.

  6. 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.

  7. Q: What is the dropout voltage of L7924CV? A: The typical dropout voltage of L7924CV is around 2V.

  8. 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.

  9. 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.

  10. 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.