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DA9062 Datasheet(PDF) 63 Page - Renesas Technology Corp

Part # DA9062
Description  PMIC for Applications Requiring up to 8.5 A
PDF  101 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

DA9062 Datasheet(HTML) 63 Page - Renesas Technology Corp

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DA9062
PMIC for Applications Requiring up to 8.5 A
Datasheet
Revision 3.8
15-Feb-2022
CFR0011-120-00
63 of 99
© 2022 Renesas Electronics
10.2 PCB Layout
1005
1005
LX2
GND
VBUCK4
1005
1005
1005
GPIO0
GPIO1
VDDIO
VBUCK4
GPIO4
VBUCK3
VBUCK1
VBUCK2
GPIO2
GPIO3
VLDO1
VLDO2
VDD
LDO2
IREF
VREF
XIN
VSS
ANA
XOUT
VLDO3
VDD
LDO34
VBUCK3
1608
1005
1005
2016
1608
LX1
Quiet ground
Quiet ground
Figure 24: PCB Layout for DA9062
10.2.1
General Recommendations
Appropriate trace width and quantity of vias should be used for all power supply paths.
Too high trace resistances can prevent the system from achieving the best performance, for
example, the efficiency and the current ratings of switching converters might be degraded.
Furthermore, the PCB may be exposed to thermal hot spots, which can lead to critical overheating
due to the positive temperature coefficient of copper.
Special care must be taken with the DA9062 pad connections. The traces connecting the pads
should of the same width as the pads and they should become wider as soon as possible.
It is recommended to create a separate quiet ground to which the VREF capacitor, IREF resistor, and
the crystal capacitors are connected. The PCB layout should ensure these component grounds are
kept quiet, that is, they should be separated from the main ground return path for the noisy power
ground. The quiet ground can then be connected to the main ground at the paddle, as shown in
Figure 24.
All traces carrying high discontinuous currents should be kept as short as possible.
Noise sensitive analog signals, such as feedback lines or crystal connections, should be kept away
from traces carrying pulsed analog or digital signals. This can be achieved by separation or shielding
with quiet signals or ground traces.



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