LX8587-33CDD

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limit - Overcurrent protection - Reverse battery protection

Package: DFN-8 (Dual Flat No-Lead)

Essence: The LX8587-33CDD is a voltage regulator IC that provides a stable output voltage with low dropout. It is designed to regulate the input voltage and provide a constant output voltage of 3.3V.

Packaging/Quantity: The LX8587-33CDD is available in a DFN-8 package, which is a small surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage: 3.3V
• Dropout Voltage: 0.25V at 1A
• Output Current: Up to 3A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LX8587-33CDD has eight pins arranged as follows:

```

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| | --| VOUT EN |-- Pin 1: Enable (EN) --| GND VIN |-- Pin 2: Input Voltage (VIN) --| GND GND |-- Pin 3: Ground (GND) --| GND GND |-- Pin 4: Ground (GND) --| NC FB |-- Pin 5: Feedback (FB) --| NC NC |-- Pin 6: Not Connected (NC) --| VOUT VOUT|-- Pin 7: Output Voltage (VOUT) |___________| ```

Functional Features

• Low dropout voltage ensures stable output even when the input voltage is close to the desired output voltage.
• High output current capability allows it to power devices with higher current requirements.
• Thermal shutdown protection prevents the IC from overheating and damaging itself.
• Short circuit current limit protects the IC and connected devices from excessive current during a short circuit.
• Overcurrent protection safeguards against excessive current draw, preventing damage to the IC and connected devices.
• Reverse battery protection prevents reverse polarity connection, which could damage the IC.

Advantages and Disadvantages

Advantages: - Stable output voltage even with low input voltage - High output current capability - Protection features ensure safe operation - Small package size for space-constrained applications

Disadvantages: - Dropout voltage may cause some power loss in low input voltage scenarios - Limited output voltage options (fixed at 3.3V)

Working Principles

The LX8587-33CDD operates as a linear voltage regulator. It takes an input voltage within the specified range and regulates it to provide a constant output voltage of 3.3V. The internal circuitry adjusts the output voltage based on the feedback received from the FB pin. The enable pin (EN) controls the regulator's operation, allowing it to be turned on or off as needed.

Detailed Application Field Plans

The LX8587-33CDD is commonly used in various electronic devices and systems that require a stable 3.3V power supply. Some typical application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Portable electronic devices
4. Battery-powered devices
5. Communication equipment
6. Industrial control systems

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and functionality.
2. LT1086-3.3: Offers higher output current capability and lower dropout voltage.
3. NCP1117-3.3: Provides a cost-effective alternative with comparable performance.

These alternative models can be considered based on specific requirements and availability in the market.

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