The SPX2808M3-3.3/TR is a low dropout (LDO) voltage regulator manufactured by Sipex Corporation. This regulator is designed to provide a stable 3.3V output voltage with a low dropout voltage, making it suitable for battery-powered and portable applications. It's commonly used to regulate voltage for microcontrollers, sensors, and other sensitive electronic components.

Applications

• Microcontroller Power Supply: Provides a stable 3.3V supply for microcontrollers.
• Sensor Power Supply: Regulates voltage for sensors in various applications.
• Battery-Powered Devices: Used in portable devices powered by batteries.
• Post Regulation: Regulates voltage after a switching regulator.
• Portable Communication Devices: Supplies power to components in mobile phones and other devices.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between input and output.
• Fixed 3.3V Output: Provides a stable 3.3V regulated output.
• Low Quiescent Current: Minimizes power consumption when idle.
• Short-Circuit Protection: Protects against short-circuit conditions.
• Thermal Overload Protection: Protects against overheating.
• Small Package: Available in a small surface mount package.

Benefits

• Efficient Power Regulation: Low dropout voltage improves efficiency in battery-powered devices.
• Stable Output Voltage: Provides a consistent 3.3V supply for sensitive components.
• Extended Battery Life: Low quiescent current minimizes power drain.
• Protection Against Faults: Short-circuit and thermal overload protection enhance reliability.
• Compact Design: Small package allows for use in space-constrained applications.

Additional Details

The SPX2808M3-3.3/TR is typically available in a SOT-23 or similar surface mount package. The low dropout voltage allows it to operate with input voltages close to the output voltage, maximizing battery life. It is important to use appropriate input and output capacitors to ensure stability. The datasheet provides detailed information on electrical characteristics, application circuits, and thermal considerations. The regulator is designed to operate over a wide temperature range. It is often used in conjunction with switching regulators for improved efficiency and regulation.