TL7700CPSR by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。TL7700CPSR Price reference $ 1.721020。TL7700CPSR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TL7700CPSR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial