L4970A by STMicroelectronics Design and production,in Shenzhen HYLX Technology Ltd. Spot sales,And can pass Shenzhen HYLX Technology Ltd. Purchasing。L4970A Price reference $ 14.050000。L4970A - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L4970A Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial