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RT9205 Datasheet(PDF) 4 Page - Richtek Technology Corporation

Part No. RT9205
Description  Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9205 Datasheet(HTML) 4 Page - Richtek Technology Corporation

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RT9205/A
Preliminary
www.richtek.com
DS9205/A-03 May 2003
4
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 COUT
3. Put CBOOT as close as to BOOT pin
4. Put CVCC as close as to VCC pin
Function Block Diagram
+
GND
BOOT
RT9205/A
VCC
CVCC
1
µF
COUT
1000
µF
+
GS
MU
D
GS
ML
D
CBOOT
0.1
µF
L
5
µH
C1
1µF
C2
470µF
GND Return
6.0V
Regulator
Control
Logic
Pow er
on Reset
Soft Start
0.8V
Reference
300kHz
Oscillator
Amp
UVP
OVP
VCC
FB
GND
BOOT
UGATE
LGATE
VCC
Error
0.8V
1V
UVP
_
LDO
PWM
SS
DRV
FBL
0.5 V
VCC
6.0V
Regulator
6.0V
Regulator
Control
Logic
Control
Logic
Pow er
on Reset
Pow er
on Reset
Soft Start
Soft Start
0.8V
Reference
0.8V
Reference
300kHz
Oscillator
300kHz
Oscillator
Amp
UVP
OVP
VCC
FB
GND
BOOT
UGATE
LGATE
VCC
Error
0.8V
1V
UVP
_
LDO
PWM
SS
DRV
FBL
0.5 V
VCC


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