TPS2390DGKR by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。TPS2390DGKR Price reference $ 1.540000。TPS2390DGKR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TPS2390DGKR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial