RT9912A RICHTEK [Richtek Technology Corporation], RT9912A Datasheet - Page 13

• Manufacturer Part Number: RT9912A
• Description: Multi-Channel Power Management IC for Portable Device
• Manufacturer: RICHTEK [Richtek Technology Corporation]

DS9912A-01 April 2011
PGND
V
3.3V
PGND
OUT1
LX should be connected to inductor by
wide and short trace, keep sensitive
components away from trace.
Q1
GND
VDD3V3_IO
C16
C6
Place the feedback components as close
as possible to the FB pin and keep away
from noisy devices.
R1
GND
V
C7
C10
OUT2
R7
ENBST
ENSW
GND
C1
VDD1
PSW
FB1
Figure 3. PCB Layout Guide
1.8V
NC
PGND
C23
R8
1
2
3
4
5
6
24
D1
7
C11
L1
23
8
L2
Input/Output capacitors must be placed
as close as possible to the Input/ Output
pins.
22
GND
9
C5
21
10
V
3.3V
OUT1
20
11
V
C4
BAT
25
19
12
Connect the exposed
pad to a ground plane.
18
17
16
15
14
13
PGND
C9
C12
GND
GND
FB4
VDD4
RESET
ENBUK
VDD3
FB3
R4
R6
VDD3V3_IO
R5
C8
R3
VDD3V3_IO
PGND
PGND
V
3.3V
PGND
C2
OUT3
C3
RT9912A
www.richtek.com
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