LP3963ES-5V LP3963ES-ADJ LP3963ESX-1.8 LP3963ESX-1.8/NOPB LP3963ESX-2.5 LP3963ESX-2.5/NOPB LP3963ESX-3.3 LP3963ESX-3.3/NOPB LP3963ESX-3.3NOPB LP3963ESX-5.0