LM2743MTC by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。LM2743MTC Price reference $ 2.071990。LM2743MTC - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM2743MTC Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial