Cheap And Discounts 1pcs/Lot TPS549B22RVFT Conv DC-DC 1.8V to 18V Synchronous Step Down Single-Out 0.6V to 5.5V 25A 40-Pin LQFN-CLIP EP New Wholesale. Buy Directly From Merchant Yixuantai 5 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.