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參數(shù)資料
| 型號： | TPS2014DG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, PDSO8 |
| 封裝： | GREEN, PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大小： | 558K |
| 代理商： | TPS2014DG4 |
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TPS2014, TPS2015
POWER DISTRIBUTION SWITCHES
SLVS159C DECEMBER 1996 REVISED MARCH 2004
18
TI.COM
APPLICATION INFORMATION
bus-powered and self-power hubs
Hubs provide data and power for downstream functions through output ports. Self-power hubs have internal
power supplies that furnish power to downstream functions. Each port is required to supply 500 mA continuous
to a downstream function. Each port must have overcurrent protection to meet the requlatory safety limit that
no single port can deliver more than 5 A. The self-power hub must also have a method to detect and report an
overcurrent condition to the USB host. The TPS20xx provides the required current-limiting function and has an
overcurrent logic output to inform the hub controller of the fault condition. The on-state resistance of the
TPS20xx is low enough to meet all USB voltage regulation requirements. The switch also provides the capability
to remove power from a faulted port.
Bus-powered hubs distribute power and data from an input port to downstream ports. Each output port is
required to supply 100 mA continuous. A bus-powered hub is not required to provide overcurrent protection
because it is provided by the upstream port. In order to power up in a low power state, the self-powered hub
must be able to switch power to its output ports. The TPS20xx can also provide this function.
Figure 25. Typical USB Self-Powered Hub Application
OUT
2
3
5
4
EN
OC
IN
7
8
6
120
F
0.1
F
10 k
TPS2014
1
D-
D+
USB Port
Connector
GND
5 V
3.3 V
5 V
OVERCURRENT
LOAD ENABLE
D1+
D1-
USB
Controller
Power Supply
GND
SN75240
TUSB2040
0.1
F
+
low power bus-powered functions and high power bus-powered functions
Low-power and high-power bus-powered functions are powered by their input ports. If the load of the function
is more than the parallel combination of 44
and 10 F, it must implement inrush current limiting. The TPS20xx
provides this function with its controlled rise time during turn on.
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| TPS2052BDG4 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2042BDRBT | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2042BDG4 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2014DR | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS2014DRG4 | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS2014P | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS2014PE4 | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS2014-R5DW | 功能描述:臺式示波器 REPAIR SERVICE COVERAGE 5 YEARS (INCLUDES PRODUCT WARRANTY PERIOD) 5 YEAR PERIOD STARTS AT TIME OF CUSTOMER INSTRUMENT PURCHASE RoHS:否 制造商:Teledyne LeCroy 通道:4 帶寬:1 GHz 采樣比:2.5 GS/s 顯示器類型:Color TFT, LCD 輸入電壓:100 VAC to 240 VAC 設(shè)備類型:Digital Oscilloscopes 電纜類型:Global Power Cord Sets Included |
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