AL5809-20P1-7

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Overcurrent protection

Package: TO-252-3 (DPAK)

Essence: The AL5809-20P1-7 is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity: The AL5809-20P1-7 is typically packaged in reels containing 2,500 units per reel.

Specifications

• Input Voltage Range: 2.5V - 6.5V
• Output Voltage Range: 1.2V - 5.5V
• Dropout Voltage: 200mV @ 300mA
• Output Current: Up to 500mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AL5809-20P1-7 has the following pin configuration:

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| | --| VIN GND |-- Pin 1: Ground --| VOUT EN |-- Pin 2: Enable --| NC VOUT|-- Pin 3: Output Voltage |___________| ```

Functional Features

• Low Dropout Voltage: The AL5809-20P1-7 exhibits 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 a maximum output current of 500mA, the AL5809-20P1-7 can power a wide range of electronic devices.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range using external resistors.
• Thermal Shutdown Protection: The IC incorporates a thermal shutdown feature that protects it from overheating, ensuring reliable operation.
• Overcurrent Protection: The AL5809-20P1-7 includes overcurrent protection to safeguard against excessive current flow.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various devices - Adjustable output voltage provides flexibility in different applications - Thermal shutdown and overcurrent protection enhance reliability

Disadvantages: - Limited input voltage range (2.5V - 6.5V) - Quiescent current of 50µA may not be suitable for ultra-low power applications

Working Principles

The AL5809-20P1-7 operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to maintain a stable output voltage. The device continuously monitors the output voltage and adjusts the pass transistor accordingly to compensate for any changes in load or input voltage.

Detailed Application Field Plans

The AL5809-20P1-7 is commonly used in various electronic applications, including but not limited to: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - LED lighting applications

Alternative Models

Some alternative models that offer similar functionality to the AL5809-20P1-7 include: - LM1117-3.3: A popular voltage regulator with fixed 3.3V output voltage - LT1763: Low dropout voltage regulator with adjustable output voltage - TPS79633: High-performance voltage regulator with low quiescent current

These alternative models can be considered based on specific requirements and design constraints.

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