TPS2491DGSR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。TPS2491DGSR Price reference $ 1.320000。TPS2491DGSR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TPS2491DGSR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial