The SPX2815AU-1.5 is a low dropout (LDO) linear regulator from Sipex Corporation (later acquired by Exar, now MaxLinear), designed to provide a regulated 1.5V output. It is capable of sourcing up to 1.5A of current while maintaining a low dropout voltage. The device features overcurrent and thermal protection, ensuring robustness and reliability in various applications. Its primary advantage lies in its ability to deliver a stable voltage even when the input voltage is close to the output voltage.

Applications:

• Microprocessor and Logic Power: Provides stable 1.5V power to core logic and microprocessors.
• Post Regulation for Switching Supplies: Used to reduce ripple and noise following a switching regulator.
• Battery-Powered Systems: Efficiently regulates voltage in portable devices for extended battery life.
• High-Efficiency Linear Regulation: Used in applications requiring high efficiency and low noise.

Features:

• 1.5A Output Current Capability: Provides up to 1.5A of regulated output current.
• Low Dropout Voltage: Maintains regulation with a minimal input-output voltage differential.
• Fixed 1.5V Output: Delivers a stable and precise 1.5V output voltage.
• Overcurrent Protection: Protects the regulator from damage due to excessive load current.
• Thermal Overload Protection: Shuts down the regulator to prevent damage from overheating.
• High Accuracy Output: Provides a highly accurate output voltage.

Benefits:

• Stable Power Supply: Ensures a consistent and reliable 1.5V power supply for sensitive components.
• Enhanced System Reliability: Overcurrent and thermal protection features improve overall system reliability.
• Improved Efficiency: Low dropout voltage maximizes efficiency, reducing power dissipation.
• Simplified Design: Fixed output voltage simplifies design and reduces the need for external components.

Technical Specifications:

The SPX2815AU-1.5 operates from an input voltage typically in the range of 2.5V to 16V, providing a regulated 1.5V output. The dropout voltage is typically below 1V at the full rated current of 1.5A. The device features a typical quiescent current of around 5mA. It is available in a TO-263 package, suitable for surface mounting and efficient heat dissipation. The operating temperature range is typically from -40°C to +125°C.