L6699D by STMicroelectronics Design and production,in Shenzhen HYLX Technology Ltd. Spot sales,And can pass Shenzhen HYLX Technology Ltd. Purchasing。L6699D Price reference $ 4.300000。L6699D - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L6699D Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial