This post describes for the Power Switch.
The part number is 1M0380R, KA1M0380R.
The function of this semiconductor is Fairchild Power Switch(SPS).
The package is TO-220F-4L.
The manufacturer of this part is Fairchild Semiconductor.
See the preview image and the Datasheet PDF file for more information.
1M0380R is Fairchild Power Switch(SPS).
Fairchild Power Switch (SPS) is a series of integrated circuits (ICs) developed by Fairchild Semiconductor (now ON Semiconductor) for power management applications. The SPS series includes various devices designed to provide efficient and reliable power control and protection in a compact form factor.
The Fairchild Power Switch devices offer features such as high-voltage switching capability, integrated power MOSFETs, current limiting, thermal shutdown protection, and fault detection. They are commonly used in switch-mode power supplies, chargers, adapters, lighting applications, and other power management systems.
The SPS product family is specially designed for an off-line SMPS with minimal external components. The SPS consist of high voltage power SenseFET and current mode PWM controller IC. PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shut down protection, over voltage protection, temperature compensated precision current sources for loop compensation and fault protection circuit.
• Precision fixed operating frequency
• KA1L0380B/KA1L0380RB (50KHz)
• KA1M0380RB (67KHz)
• KA1H0380RB (100KHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protection (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET