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RT9209GS Datasheet(PDF) 3 Page - Richtek Technology Corporation

Part # RT9209GS
Description  Synchronous Buck PWM DC-DC with Enable & PGOOD
PDF  14 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9209GS Datasheet(HTML) 3 Page - Richtek Technology Corporation

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RT9209/A
3
DS9209/A-08 March 2007
www.richtek.com
Function Block Diagram
GND
VCC
RT9209/A
BOOT
C
VCC
1uF
C
BOOT
0.1uF
C
OUT
1000uF
L
5uH
MU
D
G
S
Diode
C
IN1
1uF
C
IN2
470uF
GND Return
Layout Placement
Layout Notes
1. Put CIN1 & CIN2 to be near the MU drain and ML source nodes.
2. Put RT9209/A to be near the COUT
3. Put CBOOT as close as to BOOT pin
4. Put CVCC as close as to VCC pin
0.8
Reference
Power on
Reset
Soft Start
+
-
OVP
+
-
UVP
1V
+
-
0.8V
0.5V
Error
Amplifier
+
-
PWM
260kHz/300kHz
Oscillator
Control
Logic
VCC
6.5V
Regulation
GND
FB
VCC
BOOT
UGATE
LGATE
+
SS
PGOOD
PWM Loop
Compensation
+
-
SS
PGOOD
0.72V



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