The ON Semiconductor FSDM311 is a versatile and robust power switch IC designed for high-efficiency power management and supply applications. This integrated circuit combines a fully avalanche-rated SenseFET with a current mode PWM (Pulse Width Modulation) controller in a single package. The FSDM311 is well-suited for switch mode power supplies (SMPS), providing a compact, efficient, and reliable solution for AC-DC power conversion.

Key Features

• Precision Fixed Operating Frequency: The FSDM311 operates at a fixed frequency of 67kHz, ensuring predictable performance and facilitating easy filtering and noise reduction.
• Integrated Protections: It includes various protection features such as overvoltage, overload, overcurrent, and thermal shutdown, which safeguard the IC and the system from potential damage.
• High Efficiency: The SenseFET technology enables high efficiency through reduced gate charge and lower switching losses, making it ideal for energy-sensitive applications.
• Low Start-up Current and Operating Current: Minimizing power consumption, the FSDM311 boasts a low start-up current and maintains low operating current in the application.
• Auto-restart Mode: In the event of a fault condition, the IC automatically enters an auto-restart mode, enhancing system reliability and reducing the need for external intervention.

Applications

The FSDM311 is suitable for a wide range of applications, including:

• Power supplies for LCD Monitors and TVs
• Adapters for notebooks and printers
• Offline battery chargers
• LED lighting and drivers

Technical Specifications

• Voltage Range: Designed to operate over a wide input voltage range.
• Package: Available in a standard form factor that is easily integrated into various designs.

ON Semiconductor's FSDM311 presents an excellent choice for designers looking to enhance power efficiency and reliability in their SMPS designs while minimizing component count and simplifying the overall design process.