LM3644YFFR by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。LM3644YFFR Price reference $ 1.380000。LM3644YFFR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM3644YFFR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial