TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS247 鈥?SEPTEMBER 2000
APPLICATION INFORMATION
TUSB2040
Hub Controller
SN75240
Upstream
Port
D+
D鈥?/div>
GND
DP2
TPS2041A
OC
5V
IN
1
碌F
TPS76333
0.1
碌F
4.7
碌F
GND
IN
3.3 V
GND
PWRON1
OVRCUR1
PWRON2
OVRCUR2
48-MHz
Crystal
XTAL1
TPS2042A
Tuning
Circuit
XTAL2
PWRON3
OVRCUR3
OCSOFF
GND
PWRON4
OVRCUR4
EN1 OUT1
OC1 OUT2
EN2
OC2
IN
0.1
碌F
Ferrite Beads
D+
D鈥?/div>
GND
33
碌F
鈥?/div>
5V
4.7
碌F
VCC
DP4
DM4
5V
TPS2042A
EN1 OUT1
OC1 OUT2
EN2
OC2
IN
0.1
碌F
Ferrite Beads
GND
D+
D鈥?/div>
33
碌F
鈥?/div>
EN
OUT
5 V Power
Supply
DM2
DP3
DM3
A C
B D
SN75240
D+
D鈥?/div>
Ferrite Beads
GND
A C
B D
DP0
DM0
BUSPWR
GANGED
DP1
DM1
A C
B D
SN75240
Ferrite Beads
Tie to TPS2042A EN Input
Downstream
Ports
D+
D鈥?/div>
GND
5V
33
碌F
鈥?/div>
5V
33
碌F
鈥?/div>
鈥?USB rev 1.1 requires 120
碌F
per hub.
Figure 30. Hybrid Self/Bus-Powered Hub Implementation, TPS2042A
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
25
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TPS2044A PDF文件相关型号
TPS2044B,TPS2047B,TPS2071,TPS2110A
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