rt9205 Richtek Technology Corporation, rt9205 Datasheet - Page 4

• Manufacturer Part Number: rt9205
• Description: Dual Regulators - Synchronous Buck Pwm Dc-dc And Linear Controller
• Manufacturer: Richtek Technology Corporation

RT9205/A
Function Block Diagram
www.richtek.com
4
GND
VCC
DRV
FBL
FB
C
1uF
VCC
Reference
0.8V
VCC
0.8
LDO
GND
VCC
+
-
+
+
-
Amplifier
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
3. Put C
4. Put C
Error
RT9205/A
0.5V
1V
SS
BOOT
BOOT
VCC
Oscillator
300kHz
-
+
-
+
-
+
OVP
UVP
UVP
1000uF
C
as close as to VCC pin
Power on
Soft Start
OUT
as close as to BOOT pin
Reset
Layout Placement
C
0.1uF
+
BOOT
+
-
PWM
5uH
L
Control
Logic
OUT
G
G
Regulation
MU
ML
6.0V
D
D
S
S
GND Return
VCC
C
1uF
IN1
DS9205/A-09 October 2008
C
470uF
IN2
LGATE
UGATE
BOOT