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| TS3USB3000_15 Datasheet, PDF (11/26 Pages) Texas Instruments – DPDT USB 2.0 High-Speed and Mobile High-Definition Link Switch | |||
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TS3USB3000
SCDS337B â DECEMBER 2012 â REVISED DECEMBER 2015
Feature Description (continued)
In Figure 13, the system has an application processor (AP) that cannot survive 9-V on the USB data lines. The
following procedure protects the system and the TS3USB3000. As stated in the Absolute Maximum Ratings
footnotes, the 9-V rating is only applicable while the VCC is powered within the voltage range of the
recommended operating conditions and the OE pin is high.
1. After a charger is connected to the USB port, the AP detects that a DCP is attached.
2. The AP pulls the OE pin high to disable the switches.
3. The AP communicates to the Charger that it can negotiate for a faster charging mode with VBUS at 9-V.
4. The TS3USB3000 is now in a low-power state with the switches disabled and can protect the AP.
Potential short
in connector
5 V Ã 9 V Charger
IC
Battery
3.3 V
VBUS
D-
D+
GND
VCC MHL-
D-
USB-
MHL+
D+
USB+
SEL
/OE
GND
TS3USB3000
Phone/Tablet
Application
Processor
Figure 13. Potential VBUS to D- Short Example
Copyright © 2012â2015, Texas Instruments Incorporated
Product Folder Links: TS3USB3000
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