SPX3819S-L/TR

Product Overview

• Category: Voltage Regulator
• Use: Provides a stable output voltage for electronic devices
• Characteristics: High precision, low dropout voltage, low quiescent current
• Package: SOT-23-5
• Essence: Integrated circuit voltage regulator
• Packaging/Quantity: Tape and reel packaging, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Output Current: Up to 150mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 75µA (typical)
• Line Regulation: 0.05% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SPX3819S-L/TR has a total of five pins:

1. VIN - Input voltage pin
2. GND - Ground pin
3. EN - Enable pin (active high)
4. VOUT - Output voltage pin
5. BYP - Bypass capacitor pin

Functional Features

• High Precision: The SPX3819S-L/TR provides a highly accurate output voltage, ensuring stable operation of connected electronic devices.
• Low Dropout Voltage: With a dropout voltage as low as 200mV, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The device consumes only 75µA of current in standby mode, minimizing power consumption.
• Enable Pin: The EN pin allows for easy control of the regulator's operation, enabling or disabling it as required.
• Thermal Shutdown Protection: The SPX3819S-L/TR incorporates thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - High precision output voltage - Low dropout voltage - Low quiescent current - Enable pin for easy control - Thermal shutdown protection

Disadvantages: - Limited output current (up to 150mA) - Restricted input voltage range (2.5V to 6.0V)

Working Principles

The SPX3819S-L/TR is a linear voltage regulator that uses a feedback mechanism to maintain a stable output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to ensure the desired output voltage is maintained. The regulator operates in a low dropout mode, allowing it to provide a stable output even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The SPX3819S-L/TR is widely used in various electronic devices that require a stable power supply. Some common application fields include:

1. Portable Electronics: Mobile phones, tablets, portable media players, and other battery-powered devices benefit from the SPX3819S-L/TR's low dropout voltage and low quiescent current, extending battery life.
2. Wireless Communication: The regulator is suitable for wireless communication modules, ensuring a stable power supply for reliable data transmission.
3. Automotive Electronics: In automotive applications, the SPX3819S-L/TR can be used to regulate voltage for sensors, actuators, and other critical components, enhancing overall system performance.
4. Industrial Control Systems: The regulator finds use in industrial control systems, providing stable power for microcontrollers, sensors, and other control circuitry.

Detailed and Complete Alternative Models

1. LM1117: A popular linear voltage regulator with similar specifications and package options.
2. XC6206: Another voltage regulator offering low dropout voltage and low quiescent current, available in various package options.
3. AP2112: A high-precision voltage regulator suitable for portable electronics, featuring low dropout voltage and low quiescent current.

These alternative models provide similar functionality and can be considered as substitutes for the SPX3819S-L/TR based on specific requirements.

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