LM2673SD-5.0/NOPB LM2673SD-50 LM2673SD-ADJ LM2673SD-ADJ/NOPB LM2673SDX-12 LM2673SDX-12NOPB LM2673SDX-3.3 LM2673SDX-3.3/NOPB LM2673SDX-5.0 LM2673SDX-5.0/NOPB