TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS247 鈥?SEPTEMBER 2000
APPLICATION INFORMATION
TUSB2040
Hub Controller
1/2 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
4.7
碌F
VCC
DP4
DM4
5V
TPS2043A
EN1 OUT1
OC1 OUT2
EN2
OC2
IN1
0.1
碌F
Ferrite Beads
GND
PWRON3
OVRCUR3
OCSOFF
IN2
GND
GNDA
GNDB
0.1
碌F
EN3 OUT3
OC3
47
碌F
鈥?/div>
5V
D+
D鈥?/div>
47
碌F
鈥?/div>
EN
OUT
5 V Power
Supply
DM2
DP3
DM3
A C
B D
1/2 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 TPS2043A EN Input
Downstream
Ports
D+
D鈥?/div>
GND
5V
47
碌F
鈥?/div>
Tuning
Circuit
XTAL2
鈥?USB rev 1.1 requires 120
碌F
per hub.
Figure 31. Hybrid Self/Bus-Powered Hub Implementation, TPS2043A
26
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
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TPS2044A PDF文件相关型号
TPS2044B,TPS2047B,TPS2071,TPS2110A
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