AN79L05

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, fixed output voltage of -5V, compact size
• Package: TO-92, SOT-89
• Essence: Linear voltage regulator
• Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

• Input Voltage Range: -7V to -20V
• Output Voltage: -5V
• Dropout Voltage: 1.7V (typical)
• Output Current: 100mA (maximum)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN79L05 IC has three pins:

1. Input (IN): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference.
3. Output (OUT): Provides the regulated -5V output.

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• Fixed output voltage of -5V eliminates the need for external voltage regulation.
• Compact size allows for easy integration into various electronic circuits.
• Built-in thermal shutdown protection prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages

• Simple and cost-effective solution for voltage regulation.
• Reliable and stable output voltage.
• Wide operating temperature range.
• Small form factor enables space-saving designs.

Disadvantages

• Limited output current capacity.
• Requires external capacitors for stability.
• Not suitable for high-power applications.

Working Principles

The AN79L05 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage (-5V) with the feedback voltage from the output. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.

Detailed Application Field Plans

The AN79L05 is commonly used in various electronic devices and applications, including:

1. Power supplies for audio amplifiers and preamplifiers.
2. Voltage regulation in battery-powered devices.
3. Control circuits in automotive electronics.
4. Industrial automation systems.
5. Consumer electronics such as televisions, DVD players, and set-top boxes.

Detailed and Complete Alternative Models

• LM340-5: 5V voltage regulator with higher output current capacity.
• MC78L05: Low-power positive voltage regulator with similar characteristics.
• LT1086: Adjustable linear voltage regulator with higher output current capability.

These alternative models offer different features and specifications, providing flexibility for various design requirements.

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