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TPS2048 数据表(PDF) 21 Page - Texas Instruments

部件名 TPS2048
功能描述  QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
PDF  24 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TPS2048 数据表(HTML) 21 Page - Texas Instruments

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TPS2048, TPS2058
QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS192 – APRIL 1999
21
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
APPLICATION INFORMATION
Figure 32. Bus-Powered Hub Implementation
DP1
DM1
DP2
DM2
DP3
DM3
DP4
PWRON1
OVRCUR1
PWRON2
OVRCUR2
PWRON3
OVRCUR3
PWRON4
OVRCUR4
DM4
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
µF†
SN75240
A
B
C
D
GND
GND
GND
33
µF†
33
µF†
33
µF†
D +
D –
Upstream
Port
SN75240
A
B
5 V
GND
C
D
1
µF
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
Ferrite Beads
BUSPWR
GANGED
IN
GND
3.3 V
4.7
µF
0.1
µF
4.7
µF
EN1
IN1
OC1
OUT1
TPS2048
EN2
OC2
OUT2
0.1
µF
0.1
µF
GND
† USB rev 1.1 requires 120
µF per hub.
EN3
OC3
OUT3
EN4
OC4
OUT4
IN2
GND1
GND2
TPS76333



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