2. Power Supply Switch Settings
The device supplies use a linear voltage regulator to drop the externally su5 V (sourced either via USB or an external power
supply using switch SW3) voltage to one of the supported nominal VDD voltages (+1.8 V or +1.5 V for VDD, VDDA, and VDD_AUX
using switch SW1 and +1.8 V, +1.5 V, +1.2 V, or +1.0 V for VDD_IO using switch SW2).
2.1 +5 V Selection
The +5 V main supply is sourced by either an external power supply or by a USB-B connected to a computer. Use the +5V Source
Select switch SW3 to change between them. See the figure below. Position the slide in the up position to select the USB port (J13) and
in the down position to select the external supply (J11, J12).
Figure 2.1. 2.1. Location of EVB Power and Voltage Switches and Jumpers
UG337: Si53208-EVB User’s Guide • Power Supply Switch Settings
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021
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