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| 型号： | LTC1644IGN#TR |
| 厂商： | Linear Technology |
| 文件页数： | 22/24页 |
| 文件大小： | 447K |
| 描述： | IC CONTROLLER HOT SWAP 20-SSOP |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | CompactPCI? |
| 内部开关： | 无 |
| 电源电压： | 3.3V，5V，±12V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC1644IGNTR |
LTC1644
22
1644f
APPLICATIO S I FOR ATIO
U
U
U
Table 7. Manufacturers Web Site
MANUFACTURER
WEB SITE
International Rectifier
www.irf.com
ON Semiconductor
www.onsemi.com
IRC-TT
www.irctt.com
Vishay-Dale
www.vishay.com
Vishay-Siliconix
www.vishay.com
Diodes, Inc.
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 LTC1644s circuit breaker
operation, 4-wire Kelvin-sense connections between the
sense resistor and the LTC1644s 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&/ss, 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 LTC1644s 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1645CS | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 14SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC1645CS#PBF | 功能描述:IC CTLR HOT SWAP SEQ DUAL 14SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC1645CS#TR | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 14SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC1645CS#TRPBF | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 14SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC1645CS8 | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
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