TPS65980 Datasheet, PDF (1/28 Pages) Texas Instruments – Thunderbolt Bus Power Buck/Boost

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TPS65980
SLVSCK1A – APRIL 2014 – REVISED APRIL 2014
TPS65980 Thunderbolt™ Bus Power Buck/Boost
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.
Device Information⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE
TPS65980
VQFN (24)
5mm x 4mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
DEV_OUT
CDEV_OUT
L
CP
CBOOT
TBT_IN
CTBT_IN
TBT
Connector
RC
CC
SW
BOOT
TBT_IN
TBT_IN
COMP
CSS
CBL_OUT
TBT_OUT
TBT_OUT
GND
DEV_EN
CBL_ILIMIT
TBT_OUT
CTBT_OUT
Thunderbolt
Controller
CCBL_OUT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.