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FAN2502S25X

FAN2502S25X Description

The FAN2502S25X is a linear voltage regulator designed by Fairchild Semiconductor (now part of onsemi) for applications requiring a stable and efficient power supply. This regulator is designed to provide a fixed output voltage of 2.5V with a maximum output current of 150mA. It features a low quiescent current of 50 µA, making it suitable for low-power applications. The regulator operates with an input voltage range up to 6.5V and has a low dropout voltage of 0.18V at 150mA, ensuring high efficiency even at low input-to-output voltage differentials.

The FAN2502S25X is housed in a compact SOT23-5 package, ideal for surface-mount applications where space is a constraint. It includes an enable control feature, allowing for power management and control in various electronic systems. Additionally, it offers over-temperature protection to safeguard the device from thermal damage, enhancing its reliability in diverse operating conditions.

FAN2502S25X Features

• Low Quiescent Current: With a quiescent current of only 50 µA, the FAN2502S25X is highly efficient, making it suitable for battery-powered and low-power applications.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 43dB at 120Hz, ensuring minimal noise and ripple at the output, which is crucial for sensitive analog circuits.
• Low Dropout Voltage: A maximum dropout voltage of 0.18V at 150mA allows the regulator to maintain high efficiency even when the input voltage is close to the output voltage.
• Enable Control Feature: The enable pin provides flexibility in power management, allowing the regulator to be turned on and off as needed.
• Over-Temperature Protection: This feature ensures the device remains safe and reliable under various operating conditions by preventing thermal runaway.
• Compact Packaging: The SOT23-5 package is ideal for surface-mount applications, saving space on the PCB while maintaining robust performance.

FAN2502S25X Applications

The FAN2502S25X is well-suited for a variety of applications where a stable and efficient power supply is required. Its low quiescent current and high PSRR make it ideal for:

• Battery-Powered Devices: The low quiescent current ensures minimal power consumption during standby, extending battery life.
• Portable Electronics: The compact SOT23-5 package and low dropout voltage make it suitable for space-constrained designs.
• Analog Circuits: The high PSRR ensures clean power supply, reducing noise and improving the performance of sensitive analog circuits.
• Consumer Electronics: The regulator's efficiency and reliability make it suitable for a wide range of consumer electronic devices.

Conclusion of FAN2502S25X

The FAN2502S25X is a versatile and efficient linear voltage regulator designed for applications requiring a stable 2.5V output. Its low quiescent current, high PSRR, and low dropout voltage make it an excellent choice for low-power and battery-operated devices. The enable control feature and over-temperature protection further enhance its reliability and flexibility. Despite being marked as obsolete, the FAN2502S25X remains a reliable option for engineers and designers looking for a compact, efficient, and reliable power solution.