LM2594N-1.2 LM2594N-12 LM2594N-12 P+ LM2594N-12/NOPB LM2594N-12+ LM2594N-3.3 LM2594N-3.3/NOPB LM2594N-5，0 LM2594N-5.0 LM2594N-5.0 P+