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MC7905ACD2T
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MC7905ACD2T

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Fixed Output Voltage: -5V - Maximum Output Current: 1A - Dropout Voltage: 2V - Operating Temperature Range: -40°C to +125°C - Package Type: TO-252 - Essence: Linear voltage regulator

Packaging/Quantity: The MC7905ACD2T is available in a TO-252 package, also known as DPAK (Plastic Package). It is sold individually or in reels of 2500 units.

Specifications

The MC7905ACD2T voltage regulator has the following specifications:

  • Output Voltage: -5V
  • Input Voltage Range: -7V to -25V
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Quiescent Current: 5mA (typical)
  • Ripple Rejection Ratio: 62dB (typical)
  • Thermal Resistance: 50°C/W (junction-to-case)

Pin Configuration

The MC7905ACD2T has three pins:

  1. Input (VIN): This pin receives the input voltage, typically between -7V and -25V.
  2. Ground (GND): This pin is connected to the ground reference.
  3. Output (VOUT): This pin provides the regulated -5V output voltage.

Functional Features

The MC7905ACD2T offers the following functional features:

  • Fixed output voltage regulation at -5V.
  • Low dropout voltage, allowing operation with input voltages close to the desired output voltage.
  • Internal thermal shutdown protection.
  • Short-circuit current limiting.
  • Wide operating temperature range.

Advantages and Disadvantages

Advantages of the MC7905ACD2T voltage regulator include:

  • Simple and reliable design.
  • Low cost.
  • Wide availability.
  • Suitable for a wide range of applications.

Disadvantages of the MC7905ACD2T voltage regulator include:

  • Fixed output voltage limits flexibility in certain applications.
  • Dropout voltage may be higher compared to other regulators.

Working Principles

The MC7905ACD2T is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage (-5V) with the feedback voltage from the output, adjusting the pass transistor to maintain a stable -5V output.

Detailed Application Field Plans

The MC7905ACD2T can be used in various applications, including:

  1. Power supplies for electronic devices.
  2. Voltage regulation in automotive systems.
  3. Battery charging circuits.
  4. Industrial control systems.
  5. Audio amplifiers.

Detailed and Complete Alternative Models

Some alternative models to the MC7905ACD2T voltage regulator are:

  1. LM340-5: Fixed -5V voltage regulator by Texas Instruments.
  2. L4949E: Adjustable voltage regulator with -5V output by STMicroelectronics.
  3. LT1085CT-5: High current adjustable voltage regulator with -5V output by Linear Technology.

These alternative models offer similar functionality and can be considered as substitutes for the MC7905ACD2T in specific applications.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von MC7905ACD2T in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of MC7905ACD2T in technical solutions:

  1. Q: What is MC7905ACD2T? A: MC7905ACD2T is a voltage regulator IC that provides a fixed output voltage of -5V.

  2. Q: What is the input voltage range for MC7905ACD2T? A: The input voltage range for MC7905ACD2T is typically between -7V and -25V.

  3. Q: What is the maximum output current of MC7905ACD2T? A: The maximum output current of MC7905ACD2T is 1A.

  4. Q: Can MC7905ACD2T be used to regulate positive voltages? A: No, MC7905ACD2T is specifically designed to regulate negative voltages.

  5. Q: How does MC7905ACD2T handle thermal protection? A: MC7905ACD2T has built-in thermal shutdown protection that prevents the IC from overheating.

  6. Q: Can MC7905ACD2T be used in automotive applications? A: Yes, MC7905ACD2T is suitable for automotive applications as it can operate within a wide temperature range.

  7. Q: Is an external capacitor required for MC7905ACD2T? A: Yes, an input and output capacitor are recommended for stable operation of MC7905ACD2T.

  8. Q: Can MC7905ACD2T be used in high-frequency applications? A: MC7905ACD2T is not optimized for high-frequency applications and may have limited performance in such scenarios.

  9. Q: Can MC7905ACD2T be used in battery-powered devices? A: Yes, MC7905ACD2T can be used in battery-powered devices as it has low quiescent current.

  10. Q: What is the package type of MC7905ACD2T? A: MC7905ACD2T is available in a TO-263-3 (D2PAK) package.

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