UC3854N by Texas Instruments(TI) Design and production,in Shenzhen New Yihui Technology Co., Ltd Spot sales,And can pass Shenzhen New Yihui Technology Co., Ltd Purchasing。UC3854N Price reference $ 4.480000。UC3854N - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information UC3854N Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial