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RT9991 Datasheet(PDF) 13 Page - Richtek Technology Corporation

Part # RT9991
Description  Power Management IC for SSD
PDF  14 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9991 Datasheet(HTML) 13 Page - Richtek Technology Corporation

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RT9991
13
DS9991-01 April 2011
www.richtek.com
Figure 4. PCB Layout Guide
VOUT1
GND
LX3
LX3
LX3
LX2
VIN2
GND
GND
VIN3
VIN3
GND
VIN1
EN3
GND
FB3
LX1
33
GND
24
23
22
21
1
2
3
4
10 11 12 13
31 30 29 28
20
19
5
6
9
32
14
27
18
7
15
26
16
25
17
8
VOUT2
VOUT3
VIN
The feedback resistor divider must be
placed as close to the FB pin as possible.
The output capacitor
must be close to the IC.
The LX pin should be
connected to the
inductor by a wide and
short trace, Keep
sensitive components
away from this trace.
Place CIN between
VIN and GND and it
should be as close
as possible to the
IC.



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