LM2940QML-SP LM2940S LM2940S-10 LM2940S-10.0 LM2940S-10/NOPB LM2940S-10V/15V LM2940S-12 LM2940S-12 MOS(场效应) LM2940S-12 MOS(场效应管) LM2940S-12/NOPB