AN78L04

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, small package size, high output current capability
• Package: TO-92
• Essence: Linear voltage regulator
• Packaging/Quantity: Available in reels or tubes, quantity varies depending on manufacturer

Specifications

• Input Voltage Range: 7V to 35V
• Output Voltage: 5V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (typical)
• Quiescent Current: 4.5mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN78L04 IC 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

• Voltage Regulation: The AN78L04 regulates the input voltage to a stable 5V output.
• Low Dropout Voltage: The low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection to prevent damage due to excessive heat.
• Short Circuit Protection: The AN78L04 incorporates short circuit protection, safeguarding the IC and connected components from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - Small package size allows for space-saving designs. - High output current capability enables the use of the IC in various applications. - Low dropout voltage ensures efficient voltage regulation.

Disadvantages: - Limited output current capacity (up to 100mA). - Requires external capacitors for stability.

Working Principles

The AN78L04 is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable 5V output.

Detailed Application Field Plans

The AN78L04 is commonly used in various electronic devices and applications, including:

1. Power Supplies: The IC can be used to provide a regulated 5V supply for microcontrollers, sensors, and other low-power components.
2. Battery-Powered Devices: It is suitable for battery-powered devices that require a stable 5V voltage source.
3. Automotive Electronics: The AN78L04 can be utilized in automotive applications such as dashboard displays, lighting systems, and audio equipment.

Detailed and Complete Alternative Models

• LM7805: A popular alternative with similar specifications and pin configuration.
• MC78L05: Another alternative with comparable characteristics and package type.
• UA78L05: An alternative option from a different manufacturer, offering similar performance.

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