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V BUS
GND
SHIELD
V CC
GND
PSW5/GL5/GPSW
INDV
SP/BP
OPTION
ISP1122A
Power switches 1 to 4 are low-ohmic PMOS devices as specified in
Fig 12. Mode 4: bus-powered hub; individual port power switching; individual overcurrent detection.
9397 750 08958
Product data
+4.50 V(min)
D+
D−
330 kΩ
(4×)
PSW1/GL1
PSW2/GL2
PSW3/GL3
PSW4/GL4
OC1
OC2
OC3
OC4
OC5/GOC
Rev. 03 — 30 October 2001
low-ohmic
PMOS switch
1
0.1 µF
47 kΩ
low-ohmic
PMOS switch
2
0.1 µF
47 kΩ
low-ohmic
PMOS switch
3
0.1 µF
47 kΩ
low-ohmic
PMOS switch
4
0.1 µF
47 kΩ
Section
12.2.
ISP1122A
USB stand-alone hub
downstream
ports
ferrite bead
V BUS
+4.40 V
120
D+
(min)
µF
D−
1
GND
SHIELD
ferrite bead
V BUS
+4.40 V
120
D+
(min)
µF
D−
2
GND
SHIELD
ferrite bead
V BUS
+4.40 V
120
D+
(min)
µF
D−
3
GND
SHIELD
ferrite bead
V BUS
+4.40 V
120
D+
(min)
µF
D−
4
GND
SHIELD
MBL172
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
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