LP38691DT-3.3 LP38691DT-3.3 电源IC LP38691DT-3.3/NOPB LP38691DT-3.3+ LP38691DT-3.3-TI LP38691DT-33/NOPB LP38691DT-5.0 LP38691DT-5.0- LP38691DT-5.0/NOPB LP38691DT-5.0^