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Documents TPS22981
SLVSBM6B – DECEMBER 2012 – REVISED NOVEMBER 2015 TPS22981 3.3-V to 18-V Thunderbolt™ Power Mux
1 Features 3 Description The TPS22981 device is a current-limited power mux
providing a connection to a peripheral device from
either a low-voltage supply (3 V to 3.6 V) or a highvoltage supply (4.5 V to 19.8 V). The desired output
is selected by digital control signals. 1 Powered from 3.3 V
4.5-V to 19.8-V High-Voltage Switch
3-V to 3.6-V Switch
Adjustable Current Limit
Thermal Shutdown
Make Before Break Switch
High-Voltage Discharge Before Low-Voltage Make
Reverse Current Blocking 2 Applications Notebook Computers
Desktop Computers
Power Management Systems
Typical Application OUT HV_EN GND OUT RSVD connector RSET_S0 ISET_S0 ENHVU RSET_S3
ISET_S3 S0 RSET_V3P3
V3P3OUT VHV To prevent current backflow during a switch over from …
