AN78L04M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, small package size, high output current capability
• Package: SOP-8 (Small Outline Package)
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 6V to 35V
• Output Voltage: 5V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 4mA (typical)

Detailed Pin Configuration

The AN78L04M IC has a total of 8 pins. The pin configuration is as follows:

1. GND (Ground): Connected to the ground reference of the circuit.
2. Vin (Input Voltage): Connects to the input voltage source.
3. Vout (Output Voltage): Provides the regulated output voltage.
4. NC (No Connection): This pin is not internally connected and can be left unconnected.
5. NC (No Connection): This pin is not internally connected and can be left unconnected.
6. NC (No Connection): This pin is not internally connected and can be left unconnected.
7. NC (No Connection): This pin is not internally connected and can be left unconnected.
8. Vcc (Supply Voltage): Connected to the positive supply voltage.

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• Small package size allows for space-saving in compact designs.
• High output current capability enables it to power various components.
• Built-in thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures stable performance. - Small package size saves board space. - High output current capability allows for versatile applications. - Thermal shutdown protection prevents damage due to overheating.

Disadvantages: - Limited output current (up to 100mA). - Input voltage range is restricted to 6V to 35V.

Working Principles

The AN78L04M is a linear voltage regulator that operates by maintaining a constant output voltage regardless of variations in the input voltage or load conditions. It achieves this by using a series pass transistor to regulate the voltage drop across it. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The AN78L04M is commonly used in various electronic devices and circuits where a stable 5V power supply is required. Some typical application fields include:

1. Consumer Electronics: Used in audio/video equipment, set-top boxes, and gaming consoles.
2. Automotive Electronics: Provides regulated power for car audio systems, lighting controls, and dashboard displays.
3. Industrial Control Systems: Used in control panels, motor drives, and instrumentation devices.
4. Communication Equipment: Provides stable power for routers, modems, and network switches.
5. Computer Peripherals: Used in printers, scanners, and external storage devices.

Detailed and Complete Alternative Models

1. LM7805: A widely used linear voltage regulator with similar specifications and pin configuration.
2. MC78L05: Another popular choice for low-power applications requiring a 5V output.
3. LP2950: Low dropout voltage regulator with adjustable output voltage.
4. NCP1117: High-current linear voltage regulator suitable for demanding applications.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

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