This IC is the buck controller for the 3.3V and 5V power rails.
Identified in many schematics and board view files as U7200 or U7201.
Printed Part Numbers: TPS51125
<li class="maclist-li"><h4>Compatible with : </h4>
<ul>
13" Unibody (A1342, Late 2009 / Mid 2010)
Pro 13 Unibody (A1278, Early 2011 / Mid 2009 / Mid 2010 / Mid 2012 / Late 2011 )
Pro Unibody 15 (A1286, Early 2009 / Mid 2009 / Mid 2010 / Late 2008)