ON Semiconductor
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MC7912ACTG
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MC7912ACTG

Product Overview

Category: Voltage Regulator
Use: To regulate voltage in electronic circuits
Characteristics: High precision, low dropout voltage, thermal shutdown protection
Package: TO-220
Essence: Regulates input voltage to a constant output voltage
Packaging/Quantity: Available in reels of 2000 units

Specifications

  • Input Voltage: Up to -35V
  • Output Voltage: -12V
  • Dropout Voltage: 2V
  • Maximum Output Current: 1.5A
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. Input
  2. Ground
  3. Output

Functional Features

  • Thermal Shutdown Protection
  • Short Circuit Protection
  • Internal Current Limiting

Advantages and Disadvantages

Advantages: - High precision regulation - Wide operating temperature range - Built-in protection features

Disadvantages: - Dropout voltage may limit use in low voltage applications - Requires heat sink for high current applications

Working Principles

The MC7912ACTG operates by comparing the output voltage to a reference voltage and adjusting the pass transistor to maintain a constant output voltage.

Detailed Application Field Plans

This voltage regulator is commonly used in power supplies, audio amplifiers, and industrial control systems where a stable negative voltage supply is required.

Detailed and Complete Alternative Models

  • LM7912CT: Similar characteristics and package
  • UA7912CKC: Comparable voltage regulator with different package

This content provides a comprehensive overview of the MC7912ACTG voltage regulator, covering its specifications, features, advantages, and application field plans. It also includes alternative models for comparison.

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MC7912ACTG en soluciones técnicas

  1. What is the MC7912ACTG?

    • The MC7912ACTG is a fixed negative voltage regulator that can provide a constant output voltage of -12V.

  2. What are the typical applications of MC7912ACTG?

    • It is commonly used in electronic circuits where a stable -12V power supply is required, such as in audio amplifiers, industrial control systems, and instrumentation.

  3. What is the input voltage range for MC7912ACTG?

    • The input voltage range for MC7912ACTG is typically between -14V to -35V.

  4. What is the maximum output current of MC7912ACTG?

    • The maximum output current of MC7912ACTG is 1A.

  5. How does MC7912ACTG handle thermal considerations?

    • The MC7912ACTG has built-in thermal shutdown and current limiting features to protect the device from overheating and overcurrent conditions.

  6. What are the key features of MC7912ACTG?

    • Some key features include fixed output voltage, thermal shutdown, short-circuit protection, and low dropout voltage.

  7. Can MC7912ACTG be used in automotive applications?

    • Yes, MC7912ACTG is suitable for use in automotive electronics, provided it meets the necessary specifications and standards.

  8. What are the recommended input and output capacitors for MC7912ACTG?

    • It is recommended to use input and output capacitors to improve stability and transient response. Typically, a 0.33μF capacitor is recommended for the input and a 0.1μF capacitor for the output.

  9. What are the potential issues when using MC7912ACTG?

    • Common issues may include improper heat sinking leading to thermal shutdown, inadequate input voltage causing dropout, or insufficient output capacitance affecting stability.

  10. Where can I find the detailed datasheet for MC7912ACTG?

    • The detailed datasheet for MC7912ACTG can be found on the manufacturer's website or through authorized distributors.