AL5809-30P1-7

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 - Reverse battery protection

Package: TO-252-3 (DPAK)

Essence: The AL5809-30P1-7 is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity: The AL5809-30P1-7 is typically available in tape and reel packaging, with 2,500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 36V
• Output Voltage Range: 1.2V to 30V
• Dropout Voltage: 0.45V at 1A
• Output Current: Up to 1.5A
• Quiescent Current: 80µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AL5809-30P1-7 has three pins:

1. VIN (Pin 1): Input voltage pin. Connects to the power supply.
2. GND (Pin 2): Ground pin. Connected to the common ground of the system.
3. VOUT (Pin 3): Output voltage pin. Provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: The AL5809-30P1-7 exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1.5A, this voltage regulator can handle a wide range of load requirements.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range using external resistors, allowing flexibility in various applications.
• Thermal Shutdown Protection: The IC incorporates a thermal shutdown feature that protects it from overheating, ensuring reliable operation under high temperature conditions.
• Short-Circuit Current Limiting: In the event of a short circuit, the AL5809-30P1-7 limits the output current to prevent damage to the device and connected components.
• Reverse Battery Protection: The IC is designed to withstand reverse polarity connection, safeguarding against accidental reverse battery installation.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides versatility for different application requirements. - High output current capability enables driving of power-hungry loads. - Thermal shutdown protection ensures reliable operation under extreme temperature conditions. - Short-circuit current limiting protects the device and connected components from damage. - Reverse battery protection prevents potential damage due to incorrect polarity connection.

Disadvantages: - Dropout voltage of 0.45V may limit efficiency in low voltage applications. - Quiescent current of 80µA may contribute to power consumption in battery-powered systems.

Working Principles

The AL5809-30P1-7 operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. The feedback mechanism compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The AL5809-30P1-7 finds applications in various electronic systems where stable and regulated voltage supply is required. Some common application fields include:

1. Automotive Electronics: Used in automotive systems such as infotainment systems, lighting controls, and engine management units.
2. Industrial Control Systems: Provides regulated voltage for PLCs (Programmable Logic Controllers), motor drives, and industrial automation equipment.
3. Telecommunications: Used in telecom infrastructure equipment, base stations, and communication devices.
4. Consumer Electronics: Provides regulated voltage for audio/video equipment, gaming consoles, and portable devices.
5. Power Supplies: Utilized in low-power DC-DC converters, battery chargers, and power management modules.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar features and capabilities.
2. LT1083: High-current adjustable linear voltage regulator suitable for demanding applications.
3. LM1117: Low dropout voltage regulator available in various fixed output voltages.
4. TPS7A47: Ultra-low noise, high PSRR (Power Supply Rejection Ratio) voltage regulator for sensitive applications.
5. LDO50V: Low dropout voltage regulator capable of handling high input voltages.

These alternative models offer different specifications and features, providing options to suit specific application requirements.

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