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參數(shù)資料
| 型號： | LTC1644 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | CompactPCI Bus Hot Swap Controller |
| 中文描述： | CompactPCI總線熱插拔控制器 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 452K |
| 代理商： | LTC1644 |
LTC1644
22
1644f
APPLICATIU
W
U
U
Table 7. Manufacturers’ Web Site
MANUFACTURER
International Rectifier
ON Semiconductor
IRC-TT
Vishay-Dale
Vishay-Siliconix
Diodes, Inc.
WEB SITE
www.irf.com
www.onsemi.com
www.irctt.com
www.vishay.com
www.vishay.com
www.diodes.com
Obtaining Information on Specific Parts
For more information regarding or to request a copy of the
CompactPCI specification, contact the PCI Industrial Com-
puter Manufacturers Group at:
PCI Industrial Computer Manufacturers Group
Wakefield, MA 01880 USA
Phone: 01 (617) 224-1100
Web Site: http://www.picmg.com
TransZorb SMAJ12CA and diodes BAV99 are supplied by:
Diodes, Incorporated
Westlake Village, CA 91362 USA
Phone: 01 (805) 446-4800
Web Site: http://www.vishay-liteon.com or
http://www.diodes.com
Transistors MMBT2222A and TVS 1PMT5.0AT3 are
supplied by:
Semiconductor Components Industries, LLC
Phoenix, AZ 85008 USA
Phone: 01 (602) 244-6600
Web Site: http://www.onsemi.com
PCB Layout Considerations
For proper operation of the LTC1644’s circuit breaker
operation, 4-wire Kelvin-sense connections between the
sense resistor and the LTC1644’s 5V
IN
and 5V
SENSE
pins
and 3V
IN
and 3V
SENSE
pins are strongly recommended.
The PCB layout should be balanced and symmetrical to
minimize wiring errors. In addition, the PCB layout for the
sense resistors and the power MOSFETs should include
good thermal management techniques for optimal device
power dissipation.
A recommended PCB layout for the sense resistor, the
power MOSFET and the GATE drive components around
the LTC1644 is illustrated in Figure 18. In Hot Swap
applications where load currents can be 10A, narrow PCB
tracks exhibit more resistance than wider tracks and
operate at more elevated temperatures. Since the sheet
resistance of 1 ounce copper foil is approximately
0.45m
/
I
I
, track resistances add up quickly in high
current applications. Thus, to keep PCB track resistance
and temperature rise to a minimum, the suggested trace
width in these applications for 1 ounce copper foil is 0.03"
for each ampere of DC current.
In the majority of applications, it will be necessary to use
plated-through vias to make circuit connections from
component layers to power and ground layers internal to
the PC board. For 1 ounce copper foil plating, a general rule
is 1 ampere of DC current per via, making sure the via is
properly dimensioned so that solder completely fills any
void. For other plating thicknesses, check with your PCB
fabrication facility.
Power MOSFET and Sense Resistor Selection
Table 8 lists some current sense resistors that can be used
the LTC1644’s circuit breakers and Table 9 list some
power MOSFET transistors that are available. Table 7 lists
supplier web site addresses for discrete component men-
tioned throughout the LTC1644 data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1644CGN | 8-Bit, 40 MSPS ADC Single Ch., Internal S&H, Low Power 24-TSSOP -40 to 85 |
| LTC1647-3CGN | Dual Hot Swap Controllers |
| LTC1647-3IGN | Dual Hot Swap Controllers |
| LTC1647 | Low Power Timer 8-SO 0 to 70 |
| LTC1647-1 | Dual Hot Swap Controllers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1644CGN | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1644CGN#PBF | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC1644CGN#TR | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1644CGN#TRPBF | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1644IGN | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF) |
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