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TPS2075

更新时间： 2024-11-09 22:42:03
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德州仪器 - TI 功率控制控制器
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25页 414K
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FOUR-PORT USB HUB POWER CONTROLLERS

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TPS2075 数据手册

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TPS2074, TPS2075  
FOUR-PORT USB HUB POWER CONTROLLERS  
SLVS288A – SEPTEMBER 2000 – REVISED FEBRUARY 2001  
DB PACKAGE  
(TOP VIEW)  
Complete USB Hub Power Solution  
Meets USB Specifications 1.1 and 2.0  
PG_DLY  
EN1  
BP_DIS  
BP  
Independent Thermal and Short-Circuit  
Protection  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
2
AGND  
PG  
OUT1  
OUT2  
OUT3  
OUT4  
OC4  
3
3.3-V Regulator for USB Hub Controller  
Overcurrent Logic Outputs  
4
SP  
5
4.5-V to 5.5-V Operating Range  
SP  
6
CMOS- and TTL-Compatible Enable Inputs  
185 µA Bus-Power Supply Current  
Available in 24-Pin SSOP Package  
–40°C to 85°C Ambient Temperature Range  
NC  
7
3.3V_OUT  
OC3  
8
†
BPMODE  
OC2  
9
DP0_RST  
EN2  
OC1  
10  
11  
EN4  
DGND 12  
13 EN3  
description  
NC – No internal connection  
The TPS2074 and TPS2075 provide a complete  
USB hub power solution by incorporating three  
major functions: current-limited power switches  
for four ports, a 3.3-V 100-mA regulator, and a  
DP0linecontroltosignalattach/detachofthehub.  
†
Pin 9 is active low (BPMODE) forTPS2074  
and active high (BPMODE) for TPS2075.  
‡
simplified hybrid-hub diagram  
D+  
D–  
These devices are designed to meet bus-pow-  
ered and self-powered hub requirements. These  
devices are also designed for hybrid hub  
implementations and allow for automatic switch-  
ing from self-powered mode to bus-powered  
mode if loss of self-power is experienced. This  
feature can be disabled by applying a logic high to  
the BP_DIS input  
Power  
OUT1  
SP  
5 V  
Supply  
GND  
OUT2  
TPS2074  
D+  
D–  
OUT3  
DP0_RST  
5 V  
OUT4  
BP  
GND  
3.3 V_OUT  
BPMODE  
1.5  
kΩ  
Downstream  
Ports  
D+  
D–  
Each port has a current-limited 100-mΩ N-  
channel MOSFET high-side power switch for  
500 mA self-powered operation. Each port also  
has a current-limited 500-mΩ N-channel MOS-  
FET high-side power switch for 100-mA bus-  
powered operation. All the N-channel MOSFETs  
are designed without parasitic diodes, preventing  
current backflow into the inputs.  
Upstream  
Port  
V
EN OC  
DP1  
DM1  
CC  
5 V  
DP2  
DM2  
DP3  
DM3  
DP4  
DM4  
GND  
DP0  
DM0  
D+  
D–  
5 V  
Hub  
Controller  
D+  
D–  
GND  
5 V  
GND  
‡
See Figure 33 for complete implementation.  
For applications where a 5-V regulator is needed,  
use the TPS2070 or TPS2071 device.  
SELECTION GUIDE  
PACKAGED DEVICES  
T
USB HUB POWER CONTROLLERS  
A
†
PIN COUNT  
BPMODE  
HTSSOP (DAP)  
TPS2070DAP  
TPS2071DAP  
—
SSOP (DB)  
Active low  
Active high  
Active low  
Active high  
—
—
Four-port with internal LDO controller  
Four-port without internal LDO controller  
32  
24  
–40°C to 85°C  
TPS2074DB  
TPS2075DB  
—
†
The DB package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2074DBR).  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2001, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...25

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