TPS40057PWPR by Texas Instruments(TI) Design and production,in Shenzhen HYLX Technology Ltd. Spot sales,And can pass Shenzhen HYLX Technology Ltd. Purchasing。TPS40057PWPR Price reference $ 1.980000。TPS40057PWPR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TPS40057PWPR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial