LM2673SDX-3.3 LM2673SDX-3.3/NOPB LM2673SDX-5.0 LM2673SDX-5.0/NOPB LM2673SDX-ADJ LM2673SDX-ADJ/NOPB LM2673SX LM2673SX-12 LM2673SX-12/NOPB LM2673SX-3.3