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參數(shù)資料
型號(hào): TPS2158IDGNRG4
廠商: Texas Instruments, Inc.
英文描述: 3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT
中文描述: 3.3V的穩(wěn)壓器和雙開關(guān)的USB外圍電源管理
文件頁(yè)數(shù): 16/19頁(yè)
文件大小: 274K
代理商: TPS2158IDGNRG4
TPS2148
TPS2158
SLVS373
AUGUST 2001
16
www.ti.com
APPLICATION INFORMATION
USB power distribution requirements
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 V
BUS
Bus-powered hubs must:
Enable/disable power to downstream ports
Power up at <100 mA
Limit inrush current (<44
and 10
μ
F)
Functions must:
Limit inrush currents
Power up at <100 mA
USB applications
Figure 17 shows the TPS2148 being used in a USB bus-powered peripheral design. The internal 3.3-V LDO
is used to provide power for the USB function controller as well as to the 1.5-k
pullup resistor.
Switch 1 provides power to the 5-V circuitry which is only enabled after enumeration is complete to ensure
meeting the 100-mA USB power up requirement. Switch 2 provides power to the 3.3-V circuitry. Switch 2 is also
enabled only after enumeration is complete to satisfy the 100 mA requirement.
相關(guān)PDF資料
PDF描述
TPS2201YDF DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR PARALLEL PCMCIA CONTROLLERS
TPS2201YDB DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR PARALLEL PCMCIA CONTROLLERS
TPS2201DB DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR PARALLEL PCMCIA CONTROLLERS
TPS2201DF DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR PARALLEL PCMCIA CONTROLLERS
TPS2201Y Terminal Block; Pitch Spacing:0.2"; Wire Size (AWG):26-14; Mounting Type:PC Board; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2159DGN 制造商:Texas Instruments 功能描述:
TPS2159IDGN 功能描述:電源開關(guān) IC - USB 3.3V LDO + Dual 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
TPS2159IDGN 制造商:Texas Instruments 功能描述:IC 3.3V LDO/DUAL SWITCH 8-MSOP 制造商:Texas Instruments 功能描述:IC, 3.3V LDO/DUAL SWITCH 8-MSOP
TPS2159IDGNG4 功能描述:電源開關(guān) IC - USB 3.3V LDO + Dual 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
TPS2201IDB 功能描述:電源開關(guān) IC - 配電 1A Dual-Slot PC Card Power Switch RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻(最大值):85 mOhms 開啟時(shí)間(最大值):400 us 關(guān)閉時(shí)間(最大值):20 us 工作電源電壓:3.2 V to 6.5 V 電源電流(最大值): 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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