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參數(shù)資料
| 型號： | TPS2068DGN |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 8/33頁 |
| 文件大?。?/td> | 1022K |
| 代理商： | TPS2068DGN |
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IN
OC1
EN1
OC2
EN2
GND
0.1
F
2
8
3
5
4
7
22
F
22
F
GND
1
OUT1
TPS2060
Power Supply
D+
D
VBUS
GND
D+
D
VBUS
Downstream
USB Ports
USB
Controller
3.3 V
5 V
2
F
GND
OUT2
D+
D
VBUS
22
F
GND
D+
D
VBUS
6
0.1
F
0.1
F
0.1
F
0.1
F
22
F
GND
D+
D
VBUS
0.1
F
22
F
GND
D+
D
VBUS
0.1
F
SLVS553K
– MARCH 2005 – REVISED MAY 2011
Figure 22. Typical Six-Port USB Host/Self-Powered Hub
BPHs obtain all power from upstream ports and often contain an embedded function. The hubs are required to
power up with less than one unit load. The BPH usually has one embedded function, and power is always
available to the controller of the hub. If the embedded function and hub require more than 100 mA on power up,
the power to the embedded function may need to be kept off until enumeration is completed. This can be
accomplished by removing power or by shutting off the clock to the embedded function. Power switching the
embedded function is not necessary if the aggregate power draw for the function and controller is less than one
unit load. The total current drawn by the bus-powered device is the sum of the current to the controller, the
embedded function, and the downstream ports, and it is limited to 500 mA from an upstream port.
16
Copyright
2005–2011, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2068DGN | 制造商:Texas Instruments 功能描述:; Voltage Supply Source:Single; Interfac |
| TPS2068DGNG4 | 功能描述:電源開關(guān) IC - USB Crnt-Ltd Pwr-Dist Sw RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2068DGNR | 功能描述:電源開關(guān) IC - USB Current-Ltd Pwr- Distr Switch RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2068DGNRG4 | 功能描述:電源開關(guān) IC - USB Crnt-Ltd Pwr-Dist Sw RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2068DR | 功能描述:電源開關(guān) IC - USB Crnt-Ltd Pwr-Dist Sw RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
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