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DA9021 Datasheet(PDF) 138 Page - Dialog Semiconductor

Part # DA9021
Description  System PMIC with high efficiency USB power manager
PDF  142 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

DA9021 Datasheet(HTML) 138 Page - Dialog Semiconductor

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DA9021/22
System PMIC with high efficiency USB power manager
Company confidential
Datasheet
Revision 2.5
17-Feb-2017
CFR0011-120-00 Rev 5
138 of 142
© 2017 Dialog Semiconductor
24.5 DA9021 thermal connection, land pad and stencil design
● The DA9021 provides a centre ground plane, which is soldered directly to the PCB’s centre
ground pad. This PCB ground pad must be connected with as many vias and as direct as
possibl
e to the PCB’s main ground plane in order to achieve good thermal performance.
● Solder mask openings for the ground pad must be split by following a certain pattern like stripes
or round shapes or squares, as a solid square would apply too much solder paste and the signal
pads might not be connected properly.
● As DA9021 also provides different sizes of the signal pads, some adaption of the mask openings
might be required as well (generally small pads a bit larger, large pads a bit smaller than the pad
itself). Vias inside or next to the pads should be filled. An appropriately fine solder paste is
required.



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