TOP250 PDF datasheet can download.
This product has (TOP242 – TOP250) up to 290 W Extended Power / Integrated Off-line Switcher Family functions.
This is one of the semiconductor types. This part name is TOP250.
Manufacturers of the product is Power Integrations.
Image and pinout :
Some of the text files within the PDF file
TOP242-250 TOPSwitch -GX Family Extended Power, Design Flexible, ® EcoSmart, Integrated Off-line Switcher Product Highlights Lower System Cost, High Design Flexibility • Extended power range for higher power applications • No heatsink required up to 30 W using P package • Features eliminate or reduce cost of external components • Fully integrated soft-start for minimum stress/overshoot • Externally programmable accurate current limit • Wider duty cycle for more power, smaller input capacitor • Separate line sense and current limit pins on Y/R/F packages • Line under-voltage (UV) detection: no turn off glitches • Line overvoltage (OV) shutdown extends line surge limit • Line feed forward with maximum duty cycle (DCMAX) reduction rejects line ripple and limits DCMAX at high line • Frequency jittering reduces EMI and EMI filtering costs • Regulates to zero load without dummy loading • 132 kHz frequency reduces transformer/power supply size [ … ]
Please refer to the file for details.