The SPX385AN-2.5 is a low dropout (LDO) voltage regulator manufactured by Sipex Corporation (now part of Exar Corporation). It is designed to provide a stable and regulated 2.5V output voltage from a higher input voltage. This regulator is commonly used in applications requiring a precise and efficient voltage supply, such as battery-powered devices, microcontrollers, and other sensitive electronic components.

Applications

• Battery-powered devices: Provides stable voltage for microcontrollers and other components in portable devices.
• Microcontroller power supply: Regulates voltage for microcontrollers in embedded systems.
• Sensor power supply: Provides a clean and stable voltage source for sensors.
• Post-regulation: Used as a post-regulator after a switching power supply to improve voltage accuracy and reduce noise.
• Low-noise applications: Ideal for applications where a low-noise voltage supply is critical.

Features

• Low dropout voltage: Maintains regulation with a small difference between input and output voltage.
• Low quiescent current: Minimizes power consumption when the output is lightly loaded.
• Short-circuit protection: Protects the regulator and the load from excessive current.
• Thermal overload protection: Shuts down the regulator to prevent damage due to overheating.
• High accuracy: Provides a precise and stable output voltage.
• Fixed 2.5V output voltage: Simplifies design and reduces the need for external components.

Benefits

• Stable voltage supply: Provides a reliable and regulated voltage for sensitive electronic components.
• Extended battery life: Low quiescent current minimizes power consumption in battery-powered devices.
• Protection against fault conditions: Prevents damage to the regulator and the load from various fault conditions.
• Easy to use: Requires minimal external components.

Additional Details

The SPX385AN-2.5 provides a fixed output voltage of 2.5V with an output current of up to 150mA. It operates with an input voltage range of 2.7V to 16V. The low dropout voltage ensures that the output voltage remains stable even when the input voltage drops close to the output voltage. The short-circuit and thermal overload protection features enhance the reliability and robustness of the regulator in demanding applications. The SPX385AN-2.5 is available in various small packages such as SOT-89 and TO-92. It is a reliable and cost-effective solution for providing a stable and regulated 2.5V voltage supply in a wide range of electronic systems.