參數(shù)資料
型號: 2045A
廠商: Texas Instruments, Inc.
英文描述: CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
中文描述: 限流配電開關(guān)
文件頁數(shù): 23/31頁
文件大?。?/td> 478K
代理商: 2045A
TPS2045A, TPS2046A, TPS2047A, TPS2048A
TPS2055A, TPS2056A, TPS2057A, TPS2058A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS251A
SEPTEMBER 2000
REVISED FEBRUARY 2001
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Figure 27. Bus-Powered Hub Implementation, TPS2045A
USB rev 1.1 requires 120
μ
F per hub.
DP1
DM1
DP2
DM2
DP3
DM3
DP4
DM4
PWRON1
OVRCUR1
PWRON2
OVRCUR2
PWRON3
OVRCUR3
PWRON4
OVRCUR4
DP0
DM0
VCC
XTAL1
XTAL2
OCSOFF
SN75240
D +
D
5 V
GND
D +
D
5 V
D +
D
5 V
D +
D
5 V
48-MHz
Crystal
Downstream
Ports
TUSB2040
Hub Controller
Tuning
Circuit
A
B
C
D
33
μ
F
SN75240
A
B
C
D
GND
GND
GND
33
μ
F
33
μ
F
33
μ
F
D +
D
Upstream
Port
SN75240
A
B
5 V
GND
C
D
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
Ferrite Beads
BUSPWR
GANGED
IN
GND
3.3 V
4.7
μ
F
0.1
μ
F
4.7
μ
F
GND
EN
OC
IN
TPS2045A
OUT
EN
OC
IN
TPS2045A
OUT
EN
OC
IN
TPS2045A
OUT
EN
OC
IN
TPS2045A
OUT
TPS76333
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
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