RT9511 RICHTEK [Richtek Technology Corporation], RT9511 Datasheet - Page 22

• Manufacturer Part Number: RT9511
• Description: Fully Integrated Battery Charger with Two Step-Down Converters
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9511
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www.richtek.com
22
Output capacitors should be placed close to the IC and
connected to ground plane to reduce noise coupling.
Keep the main current traces as possible as short and
wide.
LX node of step-down DC-DC converter is with high
frequency voltage swing. It should be kept at a small
area.
Place the feedback components as close as possible
to the IC and keep away from the noisy devices.
V
OUT1
The connection of R
isolated from other noisy traces. The
short wire is recommended to prevent
EMI and noise coupling
The capacitors should be
placed close to the IC pin
and connected to ground
plane.
VDD1
GND
GND
EN1
FB2
LX1
SETA
1
2
3
4
5
6
V
Figure 10. PCB Layout Guide
OUT2
24
7
should be
23
8
22
GND
9
21 20 19
10
11
25
R
12
SETA
18
17
16
15
14
13
BAT_ON
BATT
TS
TIMER
EN
NC
The GND should be connected
to a strong ground plane for heat
sinking and noise protection.
SYS
GND
Battery
DS9511-01 April 2011