LM317AMDT 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。LM317AMDT Price reference $ 2.670000。LM317AMDT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM317AMDT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial