This is the PP3V42_G3H regulator IC for certain model Macbooks.
It turns either 18v, 16v, 12v, or 8v into 3.42v.
If you want the surrounding resistors & diodes for different board types, look below!
All <b>Macbook Motherboard Parts</b> are made from best quality materials.
Ask for Professional Installation.
Part Number: U6990
Printed Number: PM6640
Compatible Board: 820-2915 820-2914 820-3115 820-2936
Pin Numbers: QFN-14 Pin
<li class="maclist-li"><h4>Compatible with : </h4>
<ul>
Unibody 13" (A1278, Early 2011 / Late 2011 / Mid 2012)
Pro Unibody 15" (A1286, Early 2011 / Late 2011 / Mid 2012)
Pro Unibody 17" (A1297, Early 2011 / Late 2011 / Mid 2012)