onsemi

FAN2509S28X

FAN2509S28X Description

The FAN2509S28X is a linear regulator designed for applications requiring a fixed output voltage of 2.8V and a maximum output current of 50mA. Manufactured by onsemi, this regulator is part of the Power Management Integrated Circuits (PMIC) category. Despite being marked as obsolete, the FAN2509S28X remains a reliable choice for specific applications due to its robust performance and unique features.

FAN2509S28X Features

• Output Type: Fixed, ensuring a stable 2.8V output voltage.
• Input Voltage Range: Capable of handling a maximum input voltage of 6.5V, providing flexibility in power supply options.
• Output Current: Delivers a consistent 50mA of output current, suitable for low-power applications.
• Single Regulator: Contains one regulator, simplifying design and reducing component count.
• Output Configuration: Positive output configuration, ideal for standard power supply needs.
• Low Dropout Voltage: With a maximum dropout voltage of 0.075V at 50mA, the FAN2509S28X ensures efficient power conversion even at low input-to-output voltage differentials.
• Low Quiescent Current: Features a low quiescent current of 50 µA, minimizing power consumption in standby mode.
• High PSRR: Offers a high power supply rejection ratio (PSRR) of 43dB at 120Hz, effectively filtering out noise from the input supply.
• Enable Control: Includes an enable feature, allowing for dynamic control of the regulator's operation.
• Over-Temperature Protection: Provides over-temperature protection, ensuring safe operation under various conditions.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of manufacturing environments.
• Mounting Type: Surface mount, compatible with modern PCB assembly techniques.
• Package: Available in a Tape & Reel (TR) package, facilitating efficient handling and assembly.

FAN2509S28X Applications

The FAN2509S28X is particularly well-suited for applications that require a stable and efficient power supply with low power consumption. Specific use cases include:

• Portable Devices: Ideal for battery-powered devices where low quiescent current and low dropout voltage are critical for maximizing battery life.
• Low-Power Systems: Suitable for systems that require a fixed 2.8V supply and operate within a 50mA current limit, such as microcontrollers and sensors.
• Embedded Systems: Can be used in embedded systems where space is limited and a compact, efficient regulator is needed.
• Industrial Applications: The over-temperature protection and robust design make it suitable for industrial environments where reliability is paramount.

Conclusion of FAN2809S28X

The FAN2509S28X, despite its obsolete status, remains a valuable component for applications requiring a stable 2.8V output and low power consumption. Its low dropout voltage, high PSRR, and enable control feature provide significant advantages over similar models, making it an ideal choice for a variety of low-power applications. The combination of its technical specifications and performance benefits ensures that the FAN2509S28X continues to be a reliable option for designers and engineers in the electronics industry.