ETA3006

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ETA3006 Rev 1.0

PCB DESIGN GUIDELINE

In an UP case that bottom cell voltage is greater than top cell voltage, bottom cell becomes input and top

cell becomes output of the switching regulation. In a DOWN case that top cell voltage is greater than bottom

cell voltage, top cell becomes input and bottom cell becomes output. These mean parallel battery capacitors

are always output capacitor or input capacitor for regulator. So please require to locate as close as possible

to IC pins to minimize series resistance.

Please try to get the order of battery pins are BATP – BATC – BATN to make an easy battery connection.

Via( 0.4*0.6mm )

Top Layer

Bottom Layer

Figure 7: PCB Layout Guideline