LX8587-33CP

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limiting - Overcurrent and overtemperature protection

Package: TO-220

Essence: The LX8587-33CP is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate the voltage supplied to sensitive components.

Packaging/Quantity: The LX8587-33CP is available in a TO-220 package, which is a widely used through-hole package for power semiconductors. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V - 7V
• Output Voltage: 3.3V
• Dropout Voltage: 0.5V (typical)
• Output Current: Up to 3A
• Quiescent Current: 10mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LX8587-33CP has the following pin configuration:

```

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| | --| VIN GND |-- --| VOUT ADJ |-- |___________| ```

• VIN: Input voltage pin
• GND: Ground pin
• VOUT: Output voltage pin
• ADJ: Adjustable pin (used for fine-tuning the output voltage)

Functional Features

1. Low Dropout Voltage: The LX8587-33CP exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.

2. High Output Current Capability: With a maximum output current of 3A, the LX8587-33CP can provide sufficient power to drive various electronic components and circuits.

3. Thermal Shutdown Protection: The IC incorporates a thermal shutdown feature that protects it from overheating by shutting down the output when the temperature exceeds a certain threshold.

4. Short Circuit Current Limiting: In case of a short circuit, the LX8587-33CP limits the output current to prevent damage to the IC and connected devices.

5. Overcurrent and Overtemperature Protection: The IC includes built-in protection against excessive current and temperature, ensuring safe operation under abnormal conditions.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering demanding circuits - Thermal shutdown protection prevents overheating - Short circuit current limiting protects the IC and connected devices - Overcurrent and overtemperature protection enhances safety

Disadvantages: - Limited input voltage range (4.5V - 7V) - Fixed output voltage (3.3V)

Working Principles

The LX8587-33CP is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor's resistance to maintain a stable output voltage. When the input voltage drops below the desired output voltage plus the dropout voltage, the pass transistor adjusts its resistance to compensate for the difference and maintain the output voltage at the desired level.

Detailed Application Field Plans

The LX8587-33CP finds applications in various electronic devices and systems, including but not limited to: 1. Power supplies for microcontrollers and digital circuits 2. Battery-powered devices requiring stable voltage levels 3. Automotive electronics 4. Industrial control systems 5. Audio amplifiers and audio equipment 6. LED lighting systems

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and features.
2. LT1086-3.3: Offers adjustable output voltage and higher maximum output current.
3. L78M33CV: Fixed 3.3V voltage regulator with a different package (TO-220AB).

These alternative models provide similar functionality and can be used as substitutes for the LX8587-33CP in various applications.

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