BD9859EFJ Datasheet, PDF (9/16 Pages) Rohm – Simple Step-down Switching Regulators with Built-in Power MOSFET

BD9859EFJ
●Evaluation Board Pattern (Reference)
VOUT
Lx
VBAT
GND
Technical Note
Fig.26 Evaluation Board Pattern
・ Please make the Heat radiation plate of the Bottom layer to a plane of Low Impedance.
・ Because large currents low into the lines of VCC, Lx, PGND, please make the patterns as thick as much as
possible.
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9/15
2010.02 - Rev.A