The KA5M0165R is a Fairchild (now ON Semiconductor) Power Switch, specifically a Switch Mode Power Supply (SMPS) power switch. It's designed for offline power supplies, integrating a SenseFET and current mode PWM controller. This integration minimizes external components and simplifies the design of power supplies for various applications.

Applications

• Power supplies for DVD players.
• Power adapters for various electronic devices.
• Auxiliary power supplies in consumer electronics.
• Standby power supplies.
• Low-power offline power supplies.

Features

• Integrated SenseFET and PWM controller.
• Low start-up current.
• Built-in over voltage protection (OVP).
• Overload protection (OLP).
• Over temperature protection (OTP).
• Internal avalanche rugged SenseFET.
• Pulse-by-pulse current limiting.

Benefits

• Simplified power supply design.
• Reduced component count.
• Improved system reliability due to integrated protection features.
• Lower standby power consumption.
• Cost-effective solution for offline power supplies.
• Enhanced safety with built-in protection mechanisms.

Additional Details

The KA5M0165R typically comes in a TO-220F package. It's designed to operate directly from rectified AC line voltage. The integrated SenseFET simplifies the design by eliminating the need for an external sensing resistor. The PWM controller operates in current mode, providing stable and efficient power conversion. The various protection features ensure safe operation under abnormal conditions, such as overvoltage, overload, and overtemperature. The device is widely used in low to medium power offline power supply applications.