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STPMIC1 bảng dữ liệu(PDF) 46 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Highly integrated power management IC for micro processor units
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STPMIC1 bảng dữ liệu(HTML) 46 Page - STMicroelectronics

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Figure 52. 5 V DC powered application with a USB OTG port and two USB host ports
In this example, the application is powered by a 5 V DC power source (eg: from 5 V AC/DC wall adaptor) and it
supplies a boost converter. When enabled, the boost converter generates a 5.2 V on BSTOUT.
PWR_USB_SW output (VBUSOTG) is connected, in this example, to a USB Type-μAB connector (OTG). It can
alternatively be connected to a USB Type-C connector.
PWR_SW output (SWOUT) is connected, in this example, to one or two USB Type-A connectors (USB host only).
PWR_SW input (SWIN) is connected to the output of the boost converter (BSTOUT).
In this example, the boost is used to regulate VBUS voltage at 5.2 V (to be compatible with USB specification
voltage range [4.75 V;5.5 V]) to compensate the power supply voltage losses (power supply voltage tolerance and
load regulation lose on the printed circuit board).
STPMIC1
USB sub-system examples
DS12792 - Rev 7
page 46/140



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