创唯电子代理销售National Semiconductor, LP3991TL-1.55/NOPB, LP3991TL-1.5EV, LP3991TL-1.7/NOPB, LP3991TL-1.8/NOPB, LP3991TL-1.8EV, LP3991TL-2.0/NOPB, LP3991TL-2.5/NOPB, LP3991TL-2.8/NOPB, LP3991TL-3.0/NOPB, LP3991TLX-0.8/NOPB, LP3991TLX-1.2/NOPB, LP3991TLX-1.3/NOPB.