TPS54231DR by Texas Instruments(TI) Design and production,in Shenzhen HYLX Technology Ltd. Spot sales,And can pass Shenzhen HYLX Technology Ltd. Purchasing。TPS54231DR Price reference $ 0.618750。TPS54231DR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TPS54231DR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial