onsemi

FAN1581DX

FAN1581DX Description

The FAN1581DX is a linear voltage regulator designed by onsemi, offering adjustable output voltage capabilities. This regulator is designed to provide a stable output voltage with a maximum input voltage of 7V and a minimum output voltage of 1.25V. It supports a maximum output current of 5A, making it suitable for applications requiring high current delivery. The regulator features a single output configuration with a positive polarity, ensuring compatibility with a wide range of electronic systems.

FAN1581DX Features

• Adjustable Output Voltage: The FAN1581DX allows for adjustable output voltage ranging from 1.25V to 5.7V, providing flexibility in various applications.
• High Current Capability: With a maximum output current of 5A, this regulator is ideal for applications requiring high current delivery.
• Low Dropout Voltage: The maximum dropout voltage is 1.18V at 5A, ensuring efficient operation even at low input-to-output voltage differentials.
• Low Quiescent Current: The regulator operates with a quiescent current of only 6 mA, minimizing power consumption during operation.
• High PSRR: The power supply rejection ratio (PSRR) is 80dB at 120Hz, ensuring high performance in noisy environments.
• Protection Features: The FAN1581DX includes over-current and over-temperature protection, enhancing reliability and safety.
• Wide Operating Temperature Range: The regulator operates within a temperature range of 0°C to 125°C, making it suitable for a variety of industrial and consumer applications.
• Surface Mount Packaging: The surface mount package (TO252-5) ensures ease of integration into modern PCB designs.

FAN1581DX Applications

The FAN1581DX is well-suited for a variety of applications due to its adjustable output voltage, high current capability, and low dropout voltage. Some specific use cases include:

• Power Supply Applications: Ideal for providing stable power to microcontrollers, FPGAs, and other digital circuits that require precise voltage regulation.
• Consumer Electronics: Suitable for powering devices such as smartphones, tablets, and portable gaming consoles where high current delivery is necessary.
• Industrial Systems: Can be used in industrial control systems, automation equipment, and other applications requiring reliable power regulation.
• Telecommunications: Provides stable power to communication modules, routers, and other networking equipment.

Conclusion of FAN1581DX

The FAN1581DX is a versatile linear voltage regulator that offers adjustable output voltage, high current capability, and low dropout voltage. Its low quiescent current and high PSRR make it suitable for applications where efficiency and performance are critical. The inclusion of over-current and over-temperature protection ensures reliability and safety in various operating conditions. Despite its obsolete status, the FAN1581DX remains a valuable component for applications requiring stable and efficient power regulation.