LP2989IMM-3.3/NOPB by TI Design and production,in INSO(INCREDIBLE SOLUTION) Spot sales,And can pass INSO(INCREDIBLE SOLUTION) Purchasing。LP2989IMM-3.3/NOPB Price reference $ 0。LP2989IMM-3.3/NOPB - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LP2989IMM-3.3/NOPB Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial