The TPS65980 DC/DC switching regulator that receives power from a Thunderbolt™ or
Thunderbolt™ 2 power bus ranging from 2.5-V to 15.75-V and generates three separate 3.3-V supply
The TBT_OUT supply provides power to the local peripheral Thunderbolt™ controller and
support circuitry. The CBL_OUT supply provides power back to the Thunderbolt™ cable and has
adjustable current limit. The DEV_OUT supply provides power to all other circuitry in the device to
perform its designed function.
The TPS65980 is available in a 24-pin
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5mm x 4mm x 0.9mm VQFN package.