AL5809-15S1-7

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limiting - Overcurrent protection - Reverse polarity protection

Package: SOT-223

Essence: The AL5809-15S1-7 is a voltage regulator IC that provides a stable output voltage with low dropout. It is designed to regulate the voltage in various electronic devices and systems.

Packaging/Quantity: The AL5809-15S1-7 is available in a SOT-223 package. Each package contains one unit of the IC.

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 500mA
• Output Current: Up to 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AL5809-15S1-7 has the following pin configuration:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: VOUT (Output Voltage)

Functional Features

1. Low Dropout Voltage: The AL5809-15S1-7 has a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
2. High Output Current Capability: With a maximum output current of 500mA, this voltage regulator can handle high power requirements.
3. Adjustable Output Voltage: The output voltage can be adjusted within a wide range, allowing flexibility in various applications.
4. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection to prevent damage due to excessive heat.
5. Short-Circuit Current Limiting: In the event of a short circuit, the AL5809-15S1-7 limits the current to protect the circuitry.
6. Overcurrent Protection: It provides overcurrent protection, safeguarding the connected devices from excessive current flow.
7. Reverse Polarity Protection: The IC is designed with reverse polarity protection, preventing damage caused by incorrect connection.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for demanding applications - Adjustable output voltage provides flexibility - Built-in protection features enhance reliability

Disadvantages: - Limited maximum output current compared to some other voltage regulators - SOT-223 package may not be suitable for all applications

Working Principles

The AL5809-15S1-7 operates as a linear voltage regulator. It uses a pass transistor to regulate the output voltage based on the input voltage and the desired output voltage set by external resistors. The internal circuitry monitors the output voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The AL5809-15S1-7 can be used in various electronic devices and systems that require regulated voltage. Some potential application fields include:

1. Battery-Powered Devices: Portable electronic devices such as smartphones, tablets, and portable media players can benefit from the AL5809-15S1-7's low dropout voltage and adjustable output voltage.
2. Embedded Systems: Microcontrollers, sensors, and other components in embedded systems often require stable voltage regulation. The AL5809-15S1-7 can provide the necessary voltage stability.
3. Automotive Electronics: The IC's thermal shutdown protection and reverse polarity protection make it suitable for automotive applications, such as in-car entertainment systems or dashboard displays.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1084: A high-current, low-dropout linear voltage regulator with adjustable output voltage and thermal shutdown protection.
3. LM1117: A series of low dropout voltage regulators available in various fixed output voltages.

These alternative models offer similar functionality to the AL5809-15S1-7 and can be considered based on specific requirements and availability.

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