L78L05ACZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout, 5V output voltage
• Package: TO-92
• Essence: Linear voltage regulator
• Packaging/Quantity: Bulk packaging, typically sold in reels of 1000 units

Specifications

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

Detailed Pin Configuration

The L78L05ACZ 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 5V output.

Functional Features

• Voltage Regulation: The L78L05ACZ regulates the input voltage to a stable 5V output.
• Low Dropout: It has a low dropout voltage, allowing it to operate with a small voltage difference between the input and output.
• Thermal Protection: The IC includes thermal shutdown protection to prevent damage from excessive heat.
• Short-Circuit Protection: It incorporates short-circuit current limiting to protect against overcurrent conditions.

Advantages and Disadvantages

Advantages: - Simple to use and integrate into electronic circuits. - Provides a stable and regulated 5V output. - Low dropout voltage enables efficient power conversion. - Offers thermal and short-circuit protection.

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

Working Principles

The L78L05ACZ is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable 5V output. The dropout voltage is minimized by using a low-resistance pass element.

Detailed Application Field Plans

The L78L05ACZ is commonly used in various electronic applications, including:

1. Power Supply Circuits: Provides regulated 5V power for microcontrollers, sensors, and other digital components.
2. Battery-Powered Devices: Used to regulate battery voltage to a stable 5V for powering logic circuits.
3. Automotive Electronics: Provides regulated power for automotive control systems and accessories.
4. Industrial Control Systems: Used in PLCs (Programmable Logic Controllers) and other industrial automation equipment.

Detailed and Complete Alternative Models

• LM7805: Similar linear voltage regulator with a TO-220 package.
• AMS1117-5.0: Low-dropout voltage regulator with a SOT-223 package.
• NCP1117-5.0: Adjustable linear voltage regulator with a TO-220 package.

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

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