AS78L15RTR-G1

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize voltage in electronic circuits
• Characteristics:
  • Low dropout voltage
  • High output current capability
  • Thermal shutdown protection
  • Short circuit current limiting
• Package: TO-252-2 (DPAK)
• Essence: A linear voltage regulator that provides a fixed 15V output voltage
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel

Specifications

• Input Voltage Range: 17V to 30V
• Output Voltage: 15V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AS78L15RTR-G1 has three pins:

1. Input (VIN): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference of the circuit.
3. Output (VOUT): Provides the regulated 15V output voltage.

Functional Features

• Low Dropout Voltage: The AS78L15RTR-G1 has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With an output current capability of up to 100mA, this voltage regulator can handle a wide range of applications.
• Thermal Shutdown Protection: The device includes built-in thermal shutdown protection, which prevents damage due to excessive temperature.
• Short Circuit Current Limiting: It also features short circuit current limiting, protecting the regulator and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - Provides a stable and regulated 15V output voltage - Low dropout voltage ensures efficient regulation - High output current capability for versatile applications - Built-in thermal shutdown protection and short circuit current limiting enhance reliability

Disadvantages: - Limited output current capacity (up to 100mA) - Requires an input voltage range of 17V to 30V

Working Principles

The AS78L15RTR-G1 is a linear voltage regulator that uses a 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 constant 15V output. The device operates by dissipating excess voltage as heat, which is why it has a maximum dropout voltage specification.

Detailed Application Field Plans

The AS78L15RTR-G1 can be used in various electronic circuits that require a stable 15V power supply. Some potential application fields include:

1. Audio Amplifiers: Providing a regulated voltage for audio amplifiers ensures consistent performance and prevents distortion.
2. Industrial Control Systems: Voltage regulation is crucial in industrial control systems to ensure reliable operation of sensors, actuators, and other components.
3. Automotive Electronics: The AS78L15RTR-G1 can be used in automotive electronics to regulate voltage for various subsystems, such as lighting or motor control.

Detailed and Complete Alternative Models

1. LM7815: A widely used alternative with similar specifications and pin configuration.
2. MC78L15: Another popular alternative offering a fixed 15V output voltage.
3. LT1086: A higher-performance alternative with adjustable output voltage and higher output current capability.

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