The 5M02659R is a Fairchild/ON Semiconductor integrated power switch designed for offline switched-mode power supply (SMPS) applications. This device incorporates a SenseFET and current mode PWM (Pulse Width Modulation) controller, which minimizes component count and simplifies power supply designs. It is commonly used in low-power applications where efficiency and compact size are crucial.

Applications

• Power Adapters: Used in AC-DC adapters for various electronic devices like mobile phones, tablets, and laptops.
• Auxiliary Power Supplies: Implemented in auxiliary power supplies for appliances and industrial equipment.
• Standby Power Supplies: Designed for low-power standby power supplies in televisions, set-top boxes, and other consumer electronics.
• Battery Chargers: Used in battery chargers for various rechargeable devices.
• LED Lighting: Employed in LED lighting applications requiring efficient and reliable power conversion.

Features

• Integrated SenseFET: Incorporates a MOSFET with built-in current sensing for overcurrent protection.
• Current Mode PWM Control: Uses current mode PWM control for stable and efficient operation.
• Built-in Protections: Includes overvoltage, overcurrent, and thermal shutdown protections.
• Auto-Restart Mode: Automatically restarts after a fault condition, improving system reliability.
• Low Startup Current: Minimizes startup current, reducing stress on the power supply components.

Benefits

• Reduced Component Count: Integration of multiple functions reduces the number of external components required.
• Simplified Design: Simplifies power supply design, reducing development time and cost.
• Enhanced Reliability: Built-in protections enhance the reliability of the power supply.
• High Efficiency: Current mode PWM control provides high efficiency, reducing power consumption.
• Compact Size: Small package size allows for compact power supply designs.

Additional Details

The 5M02659R typically operates with a universal AC input voltage range. The switching frequency is internally set. It is usually available in a DIP (Dual In-line Package) or a TO-220 package. Detailed specifications, application circuits, and thermal considerations can be found in the official datasheet from ON Semiconductor.