The 5H0365R is a highly integrated off-line power switch from Fairchild Semiconductor/ON Semiconductor. This device is designed for use in switched-mode power supplies (SMPS), providing a cost-effective and energy-efficient solution for various power conversion applications. It integrates a SenseFET and current mode PWM controller, minimizing external components and simplifying design.

Applications

• Power Adapters: Used in AC-DC adapters for laptops, mobile devices, and other portable electronics.
• Set-Top Boxes: Employed in the power supply sections of set-top boxes for television and media streaming.
• DVD Players: Integrated into the power circuitry of DVD players to provide efficient power conversion.
• Auxiliary Power Supplies: Utilized in auxiliary power supplies for industrial equipment and appliances.
• Open-Frame Power Supplies: Found in open-frame power supplies used in various electronic devices.

Features

• Integrated SenseFET: Includes a built-in SenseFET, reducing external component count and simplifying design.
• Current Mode PWM Controller: Incorporates a current mode Pulse Width Modulation (PWM) controller for stable and efficient power conversion.
• Built-in Protections: Features over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown protection (TSD) to enhance system reliability.
• Low Startup Current: Exhibits a low startup current, minimizing power consumption during startup.
• Frequency Hopping: Implements frequency hopping to reduce EMI (electromagnetic interference).

Benefits

• High Efficiency: Provides high energy efficiency, reducing power consumption and minimizing heat generation.
• Simplified Design: Reduces the number of external components, simplifying the design process and lowering BOM (Bill of Materials) costs.
• Enhanced Reliability: Integrated protections ensure reliable operation and prevent damage from fault conditions.
• Reduced EMI: Frequency hopping helps to reduce electromagnetic interference, improving system compatibility.
• Compact Solution: Offers a compact solution, making it suitable for space-constrained applications.

Additional Details

The 5H0365R operates with a fixed switching frequency and provides excellent line and load regulation. The internal protections are designed to automatically shut down the device in the event of an over-voltage, over-current, or over-temperature condition, preventing damage to the power supply and connected equipment. This device is typically available in a TO-220 package and requires minimal external components to implement a complete power supply solution. Refer to the Fairchild Semiconductor/ON Semiconductor datasheet for detailed specifications, including input voltage range, output voltage range, switching frequency, and thermal resistance.