AAT4626
USB Dual-Channel Power Switch
VCC
+5.0V
100kΩ
100kΩ
0.1μF
4.50V to 5.25V
Upstream VBUS
100mA Maximum
USB Port A
3.3V USB Controller
AAT4626
AAT3200-3.3
Ferrite Beads
ENA OUTA
VIN
ON/OFF A
Over Current A
Over Current B
VBUS
D+
VBUS(A)
IN
OUT
GND
FLGA
FLGB
IN
120μF
D+
GND
0.1μF
D-
D-
ON/OFF B
GND
ENB OUTB
1μF
1μF
GND
GND
USB Port B
VBUS(B)
D+
Data
Ferrite Beads
120μF
0.1μF
D-
GND
Data A/B
(Two Pair to
USB Controller)
Figure 8: Self-Powered Dual Port USB Hub.
100kΩ
0.1μF
4.50V to 5.25V
Upstream V BUS
100mA Maximum
100kΩ
USB Port A
VBUS(A)
D+
3.3V USB Controller
AAT4626
AAT3200-3.3
Ferrite Beads
ENA OUTA
VIN
ON/OFF A
Over Current A
Over Current B
VBUS
IN
OUT
GND
FLGA
FLGB
IN
D+
D-
GND
120μ
F
0.1μF
D-
ON/OFF B
GND
ENB OUTB
1μ
F
1μF
GND
GND
Data A
USB Port B
VBUS(B)
D+
Data
Ferrite Beads
120μ
F
0.1μF
D-
GND
Data B
Figure 9: USB Bus Powered Dual Port USB Hub.
4626.2006.05.1.2
13
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
