LM317AMDTX by Texas Instruments(TI) Design and production,in Shenzhen Xinhuantong Technology Co., Ltd. Spot sales,And can pass Shenzhen Xinhuantong Technology Co., Ltd. Purchasing。LM317AMDTX Price reference $ 1.077300。LM317AMDTX - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM317AMDTX Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial