LM3940IMP-3.3 by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。LM3940IMP-3.3 Price reference $ 0.791700。LM3940IMP-3.3 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM3940IMP-3.3 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial