L9950XP by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。L9950XP Price reference $ 4.141800。L9950XP - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L9950XP Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial