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L7808ACF
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L7808ACF

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: Typically sold in reels or tubes containing multiple units

Specifications

  • Input Voltage Range: 10V to 35V
  • Output Voltage: 8V
  • Output Current: Up to 1.5A
  • Dropout Voltage: 2V (maximum)
  • Operating Temperature Range: -40°C to +125°C
  • Line Regulation: 0.04% (typical)
  • Load Regulation: 0.3% (typical)
  • Ripple Rejection Ratio: 62dB (typical)

Detailed Pin Configuration

The L7808ACF voltage regulator 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

  • Voltage Regulation: The L7808ACF maintains a constant output voltage of 8V, regardless of variations in the input voltage or load conditions.
  • Thermal Overload Protection: The IC includes built-in thermal shutdown circuitry that protects it from overheating.
  • Short Circuit Protection: The device is designed to withstand short-circuit conditions without damage.
  • Low Dropout Voltage: The regulator can operate with a very small voltage difference between the input and output, minimizing power dissipation.

Advantages and Disadvantages

Advantages: - Easy to use and integrate into electronic circuits - Provides a stable output voltage - Offers protection against thermal overload and short circuits - Low dropout voltage minimizes power dissipation

Disadvantages: - Fixed output voltage may not be suitable for all applications - Limited maximum output current of 1.5A

Working Principles

The L7808ACF 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 constant output voltage. The device also includes internal circuitry for thermal and short circuit protection.

Detailed Application Field Plans

The L7808ACF is commonly used in various electronic applications, including:

  1. Power Supply Units (PSUs)
  2. Battery Chargers
  3. Audio Amplifiers
  4. Industrial Control Systems
  5. Automotive Electronics

Detailed and Complete Alternative Models

  • LM7808: Similar voltage regulator from Texas Instruments
  • UA7808: Voltage regulator from Fairchild Semiconductor
  • MC7808: Voltage regulator from ON Semiconductor

These alternative models offer similar functionality and can be used as substitutes for the L7808ACF in many applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L7808ACF in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of L7808ACF in technical solutions:

  1. Q: What is L7808ACF? A: L7808ACF is a voltage regulator IC that provides a fixed output voltage of +8V.

  2. Q: What is the maximum input voltage for L7808ACF? A: The maximum input voltage for L7808ACF is 35V.

  3. Q: What is the output current capability of L7808ACF? A: L7808ACF can provide an output current of up to 1.5A.

  4. Q: Can L7808ACF be used to regulate negative voltages? A: No, L7808ACF is designed to regulate positive voltages only.

  5. Q: How does L7808ACF handle thermal dissipation? A: L7808ACF has built-in thermal overload protection and a heatsink may be required for high power applications.

  6. Q: Can L7808ACF be used in automotive applications? A: Yes, L7808ACF is suitable for automotive applications as it can operate within the specified temperature range.

  7. Q: Is L7808ACF polarity sensitive? A: No, L7808ACF is not polarity sensitive. It can be connected in either direction.

  8. Q: Can L7808ACF be used with capacitors for stability? A: Yes, L7808ACF requires input and output capacitors for stability. Refer to the datasheet for recommended values.

  9. Q: What is the dropout voltage of L7808ACF? A: The dropout voltage of L7808ACF is typically 2V.

  10. Q: Can L7808ACF be used in high-frequency applications? A: L7808ACF is not suitable for high-frequency applications due to its limited bandwidth. It is primarily intended for low-frequency power supply regulation.

Please note that these answers are general and may vary depending on specific application requirements. Always refer to the datasheet and consult with an expert when designing technical solutions.