參數(shù)資料
型號(hào)： TPS2062D-1G4
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, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 7/31頁(yè)
文件大?。?/td> 915K
代理商： TPS2062D-1G4
UNIVERSAL SERIAL BUS (USB) APPLICATIONS
HOST/SELF-POWERED AND BUS-POWERED HUBS
www.ti.com................................................................................................................................................ SLVS714A – FEBRUARY 2007 – REVISED MARCH 2009
The universal serial bus (USB) interface is a 12-Mb/s, or 1.5-Mb/s, multiplexed serial bus designed for
low-to-medium bandwidth PC peripherals (e.g., keyboards, printers, scanners, and mice). The four-wire USB
interface is conceived for dynamic attach-detach (hot plug-unplug) of peripherals. Two lines are provided for
differential data, and two lines are provided for 5-V power distribution.
USB data is a 3.3-V level signal, but power is distributed at 5 V to allow for voltage drops in cases where power
is distributed through more than one hub across long cables. Each function must provide its own regulated 3.3 V
from the 5-V input or its own internal power supply.
The USB specification defines the following five classes of devices, each differentiated by power-consumption
requirements:
Hosts/self-powered hubs (SPH)
Bus-powered hubs (BPH)
Low-power, bus-powered functions
High-power, bus-powered functions
Self-powered functions
SPHs and BPHs distribute data and power to downstream functions. The TPS206x-1 has higher current
capability than required by one USB port; so, it can be used on the host side and supplies power to multiple
downstream ports or functions.
Hosts and SPHs have a local power supply that powers the embedded functions and the downstream ports (see
Figure 25). This power supply must provide from 5.25 V to 4.75 V to the board side of the downstream
connection under full-load and no-load conditions. Hosts and SPHs are required to have current-limit protection
and must report overcurrent conditions to the USB controller. Typical SPHs are desktop PCs, monitors, printers,
and stand-alone hubs.
Copyright 2007–2009, Texas Instruments Incorporated
15
Product Folder Link(s): TPS2062-1 TPS2065-1 TPS2066-1
相關(guān)PDF資料
PDF描述
TPS2065DGNR-1G4 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
TPS2065DGNR-1 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
TPS2066DGN-1G4 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2062DG4 功能描述:電源開關(guān) IC - USB Dual 1A 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
TPS2062DGN 功能描述:電源開關(guān) IC - USB Dual 1A 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
TPS2062DGNG4 功能描述:電源開關(guān) IC - USB Dual 1A 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
TPS2062DGNR 功能描述:電源開關(guān) IC - USB Dual 1A 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
TPS2062DGNRG4 功能描述:電源開關(guān) IC - USB Dual 1A 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
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