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AN79L12M
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AN79L12M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low dropout, fixed output voltage
  • Package: TO-252, TO-220, SOT-89
  • Essence: Linear regulator
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: -35V to -10V
  • Output Voltage: -12V
  • Dropout Voltage: 2V
  • Output Current: 100mA
  • Quiescent Current: 5mA
  • Line Regulation: 0.05%/V
  • Load Regulation: 0.1%/mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN79L12M IC has three pins:

  1. Pin 1: Input (VIN) - Connects to the input voltage source.
  2. Pin 2: Ground (GND) - Connected to the ground reference.
  3. Pin 3: Output (VOUT) - Provides the regulated -12V output.

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output differentials.
  • Fixed -12V output voltage provides a stable power supply for various applications.
  • Internal thermal shutdown protection prevents damage due to excessive temperature.
  • Short-circuit current limiting protects the IC and connected components from overcurrent conditions.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for efficient operation in low voltage scenarios. - Compact package options provide flexibility in design and space-constrained applications. - Thermal shutdown protection enhances reliability and safeguards against overheating.

Disadvantages: - Limited output current capability restricts usage in high-power applications. - Fixed output voltage may not be suitable for designs requiring adjustable voltage levels.

Working Principles

The AN79L12M is a linear voltage regulator that utilizes a negative feedback mechanism to maintain a constant -12V output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the internal pass transistor accordingly. The dropout voltage is minimized, allowing for efficient regulation even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The AN79L12M is commonly used in various electronic devices and systems, including:

  1. Power supplies for audio amplifiers
  2. Battery-powered equipment
  3. Industrial control systems
  4. Automotive electronics
  5. Communication devices

Detailed and Complete Alternative Models

  1. LM7912: Similar linear voltage regulator with -12V fixed output voltage.
  2. MC79L12: Negative voltage regulator with -12V output and low dropout voltage.
  3. LT1963A-12: Adjustable linear regulator capable of providing -12V output voltage.

These alternative models offer similar functionality and can be considered as substitutes for the AN79L12M in different applications.

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技術ソリューションにおける AN79L12M 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 AN79L12M in technical solutions:

  1. Q: What is AN79L12M? A: AN79L12M is a voltage regulator IC (integrated circuit) that provides a fixed output voltage of -12V.

  2. Q: What is the purpose of AN79L12M in technical solutions? A: AN79L12M is commonly used to regulate and stabilize the voltage supply in various electronic circuits or systems.

  3. Q: What is the input voltage range for AN79L12M? A: The input voltage range for AN79L12M typically varies from -14V to -35V.

  4. Q: What is the maximum output current of AN79L12M? A: The maximum output current of AN79L12M is usually around 100mA.

  5. Q: Can AN79L12M be used in both AC and DC applications? A: Yes, AN79L12M can be used in both AC and DC applications as long as the input voltage falls within the specified range.

  6. Q: Is AN79L12M suitable for high-power applications? A: No, AN79L12M is not suitable for high-power applications due to its limited output current capability.

  7. Q: Does AN79L12M require any external components for operation? A: Yes, AN79L12M requires a minimum of two external capacitors for proper stability and filtering.

  8. Q: Can AN79L12M handle overvoltage protection? A: No, AN79L12M does not have built-in overvoltage protection. Additional circuitry may be required to protect it from excessive voltages.

  9. Q: What is the typical operating temperature range for AN79L12M? A: The typical operating temperature range for AN79L12M is -40°C to +125°C.

  10. Q: Are there any alternative voltage regulators similar to AN79L12M? A: Yes, there are several alternatives available in the market, such as LM7912, MC79L12, and UA79L12, which provide similar functionality.

Please note that the specific details and characteristics of AN79L12M may vary depending on the manufacturer and datasheet specifications.