The FAN1117AD18 is a low-dropout (LDO) voltage regulator from Fairchild/ON Semiconductor. It provides a stable and accurate 1.8V output voltage with a low dropout voltage, making it suitable for various battery-powered and portable applications. The regulator can deliver up to 1A of output current. It is commonly used in microcontrollers, digital circuits, and power management systems where a regulated 1.8V supply is required.

Applications

• Microcontroller power supplies
• Digital circuit power supplies
• Battery-powered devices
• Portable electronics
• Post-regulation for switching power supplies

Features

• Low Dropout Voltage
• 1A Output Current Capability
• Fixed 1.8V Output Voltage
• Over-Current Protection
• Over-Temperature Protection
• Short-Circuit Protection

Benefits

• Extended battery life in portable devices due to low dropout voltage.
• Stable and accurate voltage supply for sensitive electronic circuits.
• Protection against damage from over-current, over-temperature, and short-circuit conditions.
• Simplified design with fixed output voltage.
• Compact size suitable for space-constrained applications.

Technical Specifications

The FAN1117AD18 features a typical dropout voltage of around 1.2V at 1A load current. The input voltage range is typically between 4.75V and 12V. The output voltage is a fixed 1.8V with a specified accuracy. The regulator also incorporates thermal shutdown circuitry, which protects the device from overheating. Available in SOT-223 package for good thermal dissipation.

The FAN1117AD18 requires external capacitors for stable operation. Refer to the datasheet for recommended capacitor values and placement guidelines to ensure optimal performance and stability.