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參數(shù)資料
| 型號： | TPS2556DRB |
| 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： | PLASTIC, SON-8 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 942K |
| 代理商： | TPS2556DRB |
OUT
IN
GND
FAULT
ILIM
EN
RILIM
RFAULT
100 k
Control Signal
2.5V – 6.5V
VOUT
TPS2556/57
0.1 uF
CLOAD
Fault Signal
Power Pad
EN = Active Low for the TPS2556
EN = Active High for the TPS2557
1
2
3
4
5
6
OUT
FAULT
ILIM
IN
GND
IN
PAD
7
8
EN
OUT
TPS2556/57
DRB PACKAGE
(TOP VIEW)
www.ti.com
SLVS931 – NOVEMBER 2009
PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
1
FEATURES
DESCRIPTION
2
Meets USB Current-Limiting Requirements
Adjustable Current Limit, 500 mA–5 A (typ)
The TPS2556/57 power-distribution switches are
intended for applications where precision current
+/- 6.5% Current-Limit Accuracy at 4.5 A
limiting is required or heavy capacitive loads and
Fast Overcurrent Response - 3.5-
μS (typ)
short circuits are encountered. These devices offer a
22-m
High-Side MOSFET
programmable current-limit threshold between 500
mA and 5.0 A (typ) via an external resistor. The
Operating Range: 2.5 V to 6.5 V
power-switch rise and fall times are controlled to
2-
μA Maximum Standby Supply Current
minimize current surges during turn on/off.
Built-in Soft-Start
TPS2556/57 devices limit the output current to a safe
15 kV / 8 kV System-Level ESD Capable
level by switching into a constant-current mode when
UL Listed* – File No. E169910
the output load exceeds the current-limit threshold.
The
FAULT
logic
output
asserts
low
during
CB & Nemko Certification*
overcurrent and over temperature conditions.
*RILIM ≥ 24.9 k (5A maximum)
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
Figure 1. Typical Application as USB Power Switch
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2556DRBEVM-423 | 功能描述:交換機(jī) IC 開發(fā)工具 Eval Mod for TPS2556 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| TPS2556DRBR | 功能描述:電源開關(guān) IC - USB Prec Adj Current-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 |
| TPS2556DRBT | 功能描述:電源開關(guān) IC - USB Prec Adj Current-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 |
| TPS2556QDRBRQ1 | 功能描述:IC PWR DIST SWITCH ADJ 8SON 制造商:texas instruments 系列:汽車級，AEC-Q100 包裝:剪切帶（CT） 零件狀態(tài):有效 開關(guān)類型:通用 輸出數(shù):1 比率 - 輸入:輸出:1:1 輸出配置:高端 輸出類型:N 通道 接口:開/關(guān) 電壓 - 負(fù)載:2.5 V ~ 6.5 V 電壓 - 電源（Vcc/Vdd）:不需要 電流 - 輸出（最大值）:5A 導(dǎo)通電阻（典型值）:22 毫歐 輸入類型:非反相 特性:壓擺率受控型，狀態(tài)標(biāo)志 故障保護(hù):限流（可調(diào)），超溫，UVLO 工作溫度:-40°C ~ 125°C （TJ） 封裝/外殼:8-VDFN 裸露焊盤 供應(yīng)商器件封裝:8-SON（3x3） 標(biāo)準(zhǔn)包裝:1 |
| TPS2557DRBEVM-423 | 功能描述:交換機(jī) IC 開發(fā)工具 Eval Mod for TPS2557 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
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