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1 Features

1? Powered From Thunderbolt? Bus

? 2.5-V to 15.75-V Input

? 3.3-V Outputs

? Cable Power Out Current Limit

? Thermal Shutdown

2 Applications

? Thunderbolt?/Thunderbolt? 2 Systems

? Bus Powered Systems

? Power Management Systems

3 Description

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

outputs.

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

5mm x 4mm x 0.9mm VQFN package.