The FAN1585AD is a low-dropout (LDO) voltage regulator from Fairchild Semiconductor (now ON Semiconductor). It is designed to provide a stable and regulated output voltage even when the input voltage is close to the output voltage. This makes it suitable for applications where efficiency and voltage stability are critical.

Applications

• Post Regulation for Switching Power Supplies
• High-Efficiency Linear Regulators
• Battery Chargers
• Motherboard Applications
• Microprocessor Power Supplies

Features

• Low Dropout Voltage: Typically 1.3V at 3A
• Fixed Output Voltage Options
• Adjustable Output Voltage Option
• Current Limiting and Thermal Shutdown Protection
• Available in TO-220 and TO-263 Packages

Benefits

• Provides a stable and regulated output voltage
• High efficiency reduces power dissipation
• Protects the regulator and load from overcurrent and overtemperature conditions
• Simple to use and requires minimal external components

Specifications (Typical)

• Output Current: Up to 3A
• Input Voltage Range: Varies depending on the output voltage option
• Dropout Voltage: 1.3V at 3A
• Operating Temperature Range: -40°C to +125°C

As an end-of-life product, consider ON Semiconductor's website for potential replacement parts.