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RT9205PS 데이터 시트보기 (PDF) - Richtek Technology
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RT9205PS
Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller
Richtek Technology
RT9205PS Datasheet PDF : 15 Pages
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RT9205/A
Preliminary
C
OUT
1000uF
L
5uH
C
VCC
1uF
GND
VCC
BOOT
RT9205/A
C
BOOT
0.1uF
MU
D
G
S
ML
D
G
S
C
IN1
C
IN2
1uF 470uF
GND Return
Layout Placement
Layout Notes
1. Put C1 & C2 to be near the MU drain and ML source nodes.
2. Put RT9205/A to be near the C
OUT
3. Put C
BOOT
as close as to BOOT pin
4. Put C
VCC
as close as to VCC pin
Function Block Diagram
VCC
DRV
FBL
FB
GND
VCC
+
LDO
-
0.8
Reference
Power on
Reset
Soft Start
-
+
UVP
1V
-
+
OVP
-
0.5V
+
UVP
0.8V
+
-
Error
SS
Amplifier
+
+
PWM
-
6.0V
Regulation
Control
Logic
VCC
300kHz
Oscillator
BOOT
UGATE
LGATE
www.richtek.com
4
DS9205/A-08 March 2007
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