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AN78L12M
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Voltage Regulator
- Characteristics: Low dropout voltage, high output current capability
- Package: TO-252, TO-220, SOT-89
- Essence: Linear voltage regulator
- Packaging/Quantity: Tape and reel, 2500 units per reel
Specifications
- Input Voltage Range: 14V to 35V
- Output Voltage: 12V
- Output Current: Up to 100mA
- Dropout Voltage: 2V (maximum)
- Line Regulation: 0.2% (typical)
- Load Regulation: 0.4% (typical)
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
The AN78L12M has three pins: 1. Input (VIN): Connects to the input voltage source. 2. Ground (GND): Connected to the ground reference. 3. Output (VOUT): Provides the regulated output voltage.
Functional Features
- Low dropout voltage: Allows operation with a small voltage difference between the input and output.
- High output current capability: Can deliver up to 100mA of current to power various components.
- Thermal shutdown protection: Prevents damage due to excessive temperature.
- Short-circuit protection: Safeguards the IC and connected devices in case of a short circuit.
Advantages and Disadvantages
Advantages: - Compact size and easy to integrate into electronic circuits. - Stable and reliable voltage regulation. - Wide operating temperature range. - Protection features enhance device longevity.
Disadvantages: - Limited output current capability compared to higher-rated regulators. - Requires external capacitors for stability.
Working Principles
The AN78L12M is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage to a reference voltage and adjusting the pass transistor accordingly. The regulator maintains a constant output voltage by dissipating excess input voltage as heat.
Detailed Application Field Plans
The AN78L12M is commonly used in various electronic devices, including: 1. Power supplies for microcontrollers and other low-power digital circuits. 2. Battery-powered devices requiring a stable 12V supply. 3. Automotive applications, such as dashboard displays and lighting systems. 4. Industrial control systems and instrumentation. 5. Audio amplifiers and preamplifiers.
Detailed and Complete Alternative Models
- LM78L12: Similar specifications and pin configuration, available in different package options.
- MC78L12: Equivalent voltage regulator with comparable performance characteristics.
- UA78L12: Alternative option from another manufacturer, compatible with AN78L12M.
Note: This entry provides an overview of the AN78L12M voltage regulator. For detailed technical information, please refer to the datasheet provided by the manufacturer.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de AN78L12M en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of AN78L12M in technical solutions:
Q: What is AN78L12M? A: AN78L12M is a voltage regulator IC that provides a fixed output voltage of +12V.
Q: What is the input voltage range for AN78L12M? A: The input voltage range for AN78L12M is typically between +14V to +35V.
Q: What is the maximum output current of AN78L12M? A: The maximum output current of AN78L12M is 100mA.
Q: Can AN78L12M handle higher input voltages than +35V? A: No, AN78L12M is not designed to handle input voltages higher than +35V. It may get damaged if exposed to higher voltages.
Q: Is AN78L12M suitable for automotive applications? A: Yes, AN78L12M can be used in automotive applications as long as the input voltage does not exceed its specified range.
Q: Does AN78L12M require any external components for operation? A: Yes, AN78L12M requires input and output capacitors for stability and filtering purposes. Refer to the datasheet for recommended values.
Q: Can AN78L12M be used in battery-powered applications? A: Yes, AN78L12M can be used in battery-powered applications as long as the battery voltage is within its input voltage range.
Q: What is the thermal resistance of AN78L12M? A: The thermal resistance of AN78L12M is typically around 160°C/W, which determines its ability to dissipate heat.
Q: Can AN78L12M be used in high-temperature environments? A: AN78L12M has a maximum operating temperature of 125°C, so it should not be used in environments exceeding this temperature.
Q: Are there any alternatives to AN78L12M for +12V voltage regulation? A: Yes, there are other voltage regulator ICs available in the market that provide a fixed output voltage of +12V. Some popular alternatives include LM7812 and UA7812.
Please note that these answers are general and may vary depending on the specific datasheet and application requirements.