ON Semiconductor
Изображение может быть репрезентативным.
Подробную информацию о продукте см. в характеристиках.
MC7905.2CT
Посмотреть детали Таблицы данных

MC7905.2CT

Product Overview

Category

MC7905.2CT belongs to the category of voltage regulators.

Use

It is primarily used for regulating and stabilizing voltage in electronic circuits.

Characteristics

  • Regulates voltage to a fixed value.
  • Provides a stable output voltage despite fluctuations in input voltage or load variations.
  • Protects sensitive components from overvoltage.

Package

MC7905.2CT comes in a TO-220 package, which is a widely used through-hole package for power semiconductors.

Essence

The essence of MC7905.2CT lies in its ability to maintain a constant output voltage regardless of input voltage changes.

Packaging/Quantity

MC7905.2CT is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

  • Input Voltage Range: -35V to -7V
  • Output Voltage: -5V
  • Output Current: 1A
  • Dropout Voltage: 2V (maximum)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

MC7905.2CT 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: MC7905.2CT ensures a stable output voltage of -5V.
  • Overvoltage Protection: It safeguards connected components by preventing excessive voltage levels.
  • Thermal Shutdown: In case of excessive temperature, the regulator shuts down to prevent damage.

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation.
  • Protection against overvoltage.
  • Suitable for various electronic applications.
  • Easy to use and integrate into circuits.

Disadvantages

  • Dropout voltage of 2V may limit its use in low voltage applications.
  • Requires external capacitors for stability.

Working Principles

MC7905.2CT operates on the principle of a linear voltage regulator. It uses a series pass transistor to maintain a constant output voltage. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to regulate the output.

Detailed Application Field Plans

MC7905.2CT finds extensive application in various electronic devices, including: - Power supplies - Audio amplifiers - Industrial control systems - Automotive electronics - Battery charging circuits

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for MC7905.2CT are: - LM340T-5.0 - LT1084CP-5 - UA7805CKCSE3

These alternatives offer similar voltage regulation capabilities and can be used based on specific requirements.

In conclusion, MC7905.2CT is a voltage regulator that provides stable and regulated -5V output voltage. It offers reliable voltage regulation, overvoltage protection, and finds application in various electronic devices. While it has certain limitations, such as dropout voltage and external capacitor requirement, there are alternative models available to suit different needs.

Перечислите 10 распространенных вопросов и ответов, связанных с применением MC7905.2CT в технических решениях.

Sure! Here are 10 common questions and answers related to the application of MC7905.2CT in technical solutions:

  1. Q: What is MC7905.2CT? A: MC7905.2CT is a voltage regulator IC that provides a fixed output voltage of -5V.

  2. Q: What are the typical applications of MC7905.2CT? A: MC7905.2CT is commonly used in various electronic devices where a stable -5V power supply is required, such as audio amplifiers, industrial control systems, and instrumentation.

  3. Q: How does MC7905.2CT regulate the output voltage? A: MC7905.2CT uses a series pass transistor to maintain a constant -5V output voltage, regardless of input voltage variations.

  4. Q: What is the maximum input voltage for MC7905.2CT? A: The maximum input voltage for MC7905.2CT is typically around -35V. Exceeding this voltage may damage the IC.

  5. Q: Can MC7905.2CT handle high current loads? A: Yes, MC7905.2CT can handle currents up to 1A. However, it is recommended to use a heat sink if the load current exceeds 500mA to prevent overheating.

  6. Q: Is MC7905.2CT polarity-sensitive? A: Yes, MC7905.2CT is polarity-sensitive. The input pin (Vin) should be connected to a negative voltage source, and the output pin (Vout) provides a regulated -5V output.

  7. Q: Can I use MC7905.2CT to generate positive voltages? A: No, MC7905.2CT is specifically designed to provide a negative voltage output. For positive voltage regulation, you should use a different voltage regulator IC.

  8. Q: What are the key features of MC7905.2CT? A: Some key features of MC7905.2CT include thermal shutdown protection, short-circuit current limiting, and internal overcurrent protection.

  9. Q: Can I connect multiple MC7905.2CT in parallel to increase the current capacity? A: It is generally not recommended to connect voltage regulators in parallel, as it can lead to stability issues and uneven load sharing. Instead, consider using a higher current-rated voltage regulator if needed.

  10. Q: Are there any precautions to consider when using MC7905.2CT? A: Yes, some precautions include providing proper heat dissipation, avoiding reverse polarity connections, and ensuring sufficient input and output capacitance for stable operation.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of MC7905.2CT.