LM2670S LM2670S-12 LM2670S-12/NOPB LM2670S-12/NOPB. LM2670S-13+ LM2670S-3.3 LM2670S-3.3/NOPB LM2670S-3.3/NOPB. LM2670S-5.0 LM2670S-5.0/NOPB