DocID025515 Rev 1

11/19

AN4397

Layout

19

The following indications must be followed in the PCB routing:



The same ground plane has to connect the exposed pad and the pins PGND and GND.



The capacitor on the STORE pin must be placed as close as possible to the pin.



The capacitors on LDO1 and LDO2 pins must be placed as close as possible to the

respective pins.

Details on the recommended layout solution are shown in Figure 8 and Figure 9.

Figure 8. Ground plane detail

Figure 9. Components placement detail