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LTC4245CUHF#TR

更新时间： 2024-01-10 20:18:45
品牌 Logo 应用领域
凌特 - Linear 监控
页数 文件大小 规格书
36页 408K
描述
LTC4245 - Multiple Supply Hot Swap Controller with I<sup>2</sup>C Compatible Monitoring; Package: QFN; Pins: 38; Temperature Range: 0&deg;C to 70&deg;C

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中文翻译

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LTC4245CUHF#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC38,.2X.28,20
针数：38Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16其他特性：ALSO REQUIRES A 3.3V, 5V, -12V SUPPLY
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：R-PQCC-N38JESD-609代码：e0
长度：7 mm湿度敏感等级：1
信道数量：4功能数量：1
端子数量：38最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC38,.2X.28,20
封装形状：RECTANGULAR封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235电源：3.3,5,+-12 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Power Management Circuits最大供电电流 (Isup)：5 mA
标称供电电压 (Vsup)：12 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：20宽度：5 mm
Base Number Matches：1

LTC4245CUHF#TR 数据手册

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LTC4245  
Multiple Supply Hot Swap  
2
Controller with I C  
Compatible Monitoring  
U
DESCRIPTIO  
FEATURES  
Allows Safe Insertion into Live CompactPCITM or  
The LTC®4245 Hot SwapTM controller allows a board to  
be safely inserted and removed from a live backplane in  
multiple supply systems such as CompactPCI and PCI  
Express. Using four external N-channel pass transistors,  
the board supply voltages can be ramped up at an adjust-  
ablerateandinanydesiredsequence. AnI Cinterfaceand  
onboard ADC allow monitoring of board current, voltage  
and fault status for each supply.  
■
PCI ExpressTM Backplane  
■
8-Bit ADC Monitors Current and Voltage  
2
I CTM/SMBus Interface  
■
■
dI/dt Controlled Soft Start  
Simultaneous or Sequenced Turn-On  
2
■
■
2ꢀV Absolute Maximum ꢁating for 12V Supplies  
■
No External Gate Capacitor ꢁequired  
■
Dual-Level Circuit Breaker and Current Limit  
The device features adjustable dI/dt controlled soft start  
and foldback limited inrush current. A dual-level timed  
circuit breaker and fast current limit protect each supply  
againstovercurrentfaults.Apowergoodinputwithtimeout  
allows a downstream supply monitor to disconnect the  
board supplies. The device can be configured to function  
withouta–12Vsupplyorwithanextra3.3Vsupplyinstead  
of a 5V supply.  
■
Bus Precharge Output  
Power Good Input with Timeout  
■
■
Optional Latchoff or Autoretry After Faults  
■
Alerts Host After Faults  
■
Integrated LOCAL_PCI_ꢁST# Logic  
■
36-Pin SSOP and 38-Pin (5mm × 7mm) QFN  
Packages  
U
APPLICATIO S  
The controller has additional features to interrupt the host  
when a fault has occurred, notify when output power is  
good, detect insertion of a load card and power-up in  
either the on or off state.  
■
Live Board Insertion  
■
CompactPCI, CompactPCI Express, CompactTCA,  
PCI Express Systems  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
CompactPCI Application  
BACKPLANE CARD  
CONNECTOR CONNECTOR  
Sequenced Turn-On Waveform  
5V  
OUT  
BD_SEL#  
10V/DIV  
12V  
OUT  
12V 12V  
IN  
12V  
12V  
5V  
IN  
5V  
5V  
GATE  
12V  
5V  
SENSE  
GATE  
OUT  
SENSE  
OUT  
OUT  
5V  
OUT  
OUTPUT  
VOLTAGE  
5V/DIV  
3V  
BD_SEL#  
OUT  
ON  
SUPPLY  
MONITOR  
RESET  
PGI  
HEALTHY#  
SDA  
V
EEOUT  
LTC4245  
BOARD  
RESET  
LOCAL_PCI_RESET#  
PRECHARGE  
SCL  
ALERT#  
PCI_RST#  
TO BUS  
LOCAL_PCI_RST#  
5V/DIV  
GND  
3V  
OUT  
V
EEIN  
V
V
V
3V  
IN  
3V  
3V  
TIME (50ms/DIV)  
EESENSE EEGATE EEOUT  
SENSE GATE  
–12V  
OUT  
4245 TA01b  
3.3V  
OUT  
4245fa  
1
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中文翻译

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