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RT5028 датащи(PDF) 21 Page - Richtek Technology Corporation

номер детали RT5028
подробное описание детали  Integrated PMIC
PDF  40 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT5028 датащи(HTML) 21 Page - Richtek Technology Corporation

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21
DS5028-02
September 2016
www.richtek.com
RT5028
©
Copyright
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Layout Consideration
For the best performance of the RT5028, the following
PCB layout guidelines must be strictly followed.
Place the input and output capacitors as close as
possible to the input and output pins respectively for
good filtering.
Keep the main power traces as wide and short as
possible.
The switching node area connected to LX and inductor
should be minimized for lower EMI.
Connect the GND and Exposed Pad to a strong ground
plane for maximum thermal dissipation and noise
protection.
Directly connect the output capacitors to the feedback
network of each channel to avoid bouncing caused by
parasitic resistance and inductance from the PCB trace.
Figure 2. PCB Layout Guide
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VOUTL1
VINL123
VOUTL2
VOUTL3
VOUTL6
VINL456
VOUTL4
VOUTL7
VINL78
LXB2
LXB2
ENB2
VINB3
LXB3
LXB3
AGND
VOUTB3S
GND
GND
GND
Connect the Exposed
Pad to a ground plane.
Input/Output capacitors must be
placed as close as possible to the
Input/Output pins.
GND
VOUTB2S
VIN
VOUTB2
GND
10
14
13
12
11
25
26
27
28
29
30
31
32 VINB4
LXB4
ENB3
VOUTB4S
43
44
45
46
VOUTL8
ENL4
ENL5
ENL6
VINB3
VIN
GND
GND
GND
GND
VOUTL5
VIN
VOUTB1
VOUTB3
GND
GND
VOUTB4
GND
VIN
VIN
LX should be connected to Inductor by wide and short
trace, keep sensitive compontents away from this trace.



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