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Número de pieza
componentes Descripción
RT9202 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT9202
Single Synchronous Buck PWM DC-DC Controller
Richtek Technology
RT9202 Datasheet PDF : 14 Pages
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RT9202
C
OUT
1000uF
L
5uH
C
VCC
1uF
GND
VCC
BOOT
RT9202
C
BOOT
0.1uF
MU
D
G
S
ML
D
C
IN1
C
IN2
1uF 470uF
G
S
GND Return
Layout Placement
Layout Notes
1. Put CIN1 & CIN2 to be near the MU drain and ML source nodes.
2. Put RT9202 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
FB
GND
Bias
0.8
Reference
Power on
Reset
Soft Start
1.1V
-
+OVP
0.8V
+
Error
-
-
0.5V
UVP
+
Error
Amplifier
+
PWM
-
300kHz
Oscillator
6.0V
Regulation
BOOT
40uA
+
OC
-
OCSET
UGATE
Control
Logic
VCC
PHASE
LGATE
DS9202-09 March 2007
www.richtek.com
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