This reference design provides a power-supply circuit with an input voltage of 3.3V, an output voltage of 1.8V, and an output current of 1A using the MAX8869 low-dropout linear regulator. The circuit was developed to power a MGTVCCAUX rail on a Xilinx® Kintex® Ultrascale™ FPGA. Included in this reference design are a schematic and a bill of materials.
Figure 1. Schematic of the MAX8869 linear regulator.
Xilinx and Kintex are registered trademarks and UltraScale is a trademark of Xilinx, Inc.