MP2007 – 3A, 1.3V-6.0V INPUT, DDR MEMORY TERMINATION REGUALTOR
Thermal Consideration of VTT Active
Supply Voltage Undervoltage Monitor
Terminator
The IC continuously monitors VDRV. If VDRV is
set higher than its preset threshold and VTTEN is
high too, the IC will start up.
The VTT terminator is designed to handle large
transient output currents. If large currents are
required for very long duration, then care should
be taken to ensure the maximum junction
temperature is not exceeded. The 8-pin MSOP
with ExposedPAD has a thermal resistance of
50oC/W (dependent on air flow, and PCB design).
Thermal Shutdown
When the chip junction temperature exceeds
150oC, the entire IC is shutdown. The IC
resumes normal operation only after the junction
temperature dropping below 125oC.
In order to take full advantage of the thermal
capability of this package, the exposed pad
should be soldered directly onto the PCB ground
layer to allow good thermal contact. It is
recommended that the PCB should have 10 to 15
vias with 0.3mm drill size underneath the
exposed thermal pad connecting all the ground
layers
MP2007 Rev. 0.9
7/23/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
8
MPS [ MONOLITHIC POWER SYSTEMS ]
