參數(shù)資料
型號(hào)： TPS2047BD
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 電源管理
英文描述： 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝： GREEN, PLASTIC, MS-012AC, SOIC-16
文件頁(yè)數(shù)： 9/29頁(yè)
文件大?。?/td> 901K
代理商： TPS2047BD
www.ti.com
IN
OC1
OC2
2
8
3
5
4
7
0.1
F
10
F
Internal
Function
OUT1
Power Supply
3.3 V
EN1
6
0.1
F
10
F
OUT2
Internal
Function
0.1
F
10
F
USB
Control
GND
VBUS
D-
D+
EN2
GND
1
TPS2046B
USB POWER-DISTRIBUTION REQUIREMENTS
SLVS532C – JULY 2004 – REVISED OCTOBER 2007
Figure 25. High-Power Bus-Powered Function (Example, TPS2046B)
USB can be implemented in several ways, and, regardless of the type of USB device being developed, several
power-distribution features must be implemented.
Hosts/self-powered hubs must:
–
Current-limit downstream ports
–
Report overcurrent conditions on USB VBUS
Bus-powered hubs must:
–
Enable/disable power to downstream ports
–
Power up at <100 mA
–
Limit inrush current (<44
and 10 μF)
Functions must:
–
Limit inrush currents
–
Power up at <100 mA
The feature set of the TPS204xB/TPS2055B allows them to meet each of these requirements. The integrated
current-limiting and overcurrent reporting is required by hosts and self-powered hubs. The logic-level enable and
controlled rise times meet the need of both input and output ports on bus-powered hubs, as well as the input
ports for bus-powered functions (see Figure 26 through Figure 27).
Copyright 2004–2007, Texas Instruments Incorporated
17
Product Folder Link(s): TPS2045B TPS2055B TPS2046B TPS2047B
相關(guān)PDF資料
PDF描述
TPS2047BDRG4 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
TPS2046BDG4 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
TPS2051BDBV 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
TPS2051BQDRQ1 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
TPS2051DR SPECIALTY ANALOG CIRCUIT, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2047BDG4 功能描述:電源開(kāi)關(guān) IC - USB Current-Limited 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
TPS2047BDR 功能描述:電源開(kāi)關(guān) IC - USB Current-Limited 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
TPS2047BDRG4 功能描述:電源開(kāi)關(guān) IC - USB Current-Limited 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
TPS2047BEVM-294 功能描述:交換機(jī) IC 開(kāi)發(fā)工具 TPS2047BEVM-294 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V
TPS2047D 功能描述:電源開(kāi)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
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