The KA1H0280RTU is a Fairchild/ON Semiconductor power switch designed for offline switched-mode power supply (SMPS) applications. This device integrates a Pulse Width Modulation (PWM) controller and a high-voltage power MOSFET, offering a compact and efficient solution for various power supply designs. It is suitable for applications requiring a cost-effective and reliable power conversion solution.

Applications:

• Power Adapters
• Auxiliary Power Supplies
• Standby Power Supplies
• Battery Chargers
• Open-frame Power Supplies

Features:

• Integrated PWM Controller and Power MOSFET
• High Voltage Capability
• Over Voltage Protection (OVP)
• Over Current Protection (OCP)
• Thermal Shutdown Protection (TSD)
• Under Voltage Lockout (UVLO)
• Internal Current Sense

Benefits:

• Reduced Component Count simplifies design and lowers BOM cost.
• Improved Efficiency due to the integrated MOSFET and optimized PWM control.
• Enhanced System Reliability through built-in protection features.
• Simplified PCB Layout with integrated functionality.
• High Power Density allows for smaller and more compact power supply designs.

Additional Details:

The KA1H0280RTU operates with a fixed switching frequency and incorporates various protection features to ensure reliable operation under fault conditions. It typically comes in a TO-220 or similar package. Key specifications include the drain-source breakdown voltage, drain current rating, and operating temperature range. The device is optimized for low standby power consumption and meets international energy efficiency standards. It's widely used in consumer electronics, industrial equipment, and other applications requiring an efficient and compact power supply solution.