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LTC4242 PDF预览

LTC4242

更新时间: 2024-01-14 04:53:25
品牌 Logo 应用领域
凌特 - Linear 控制器PC
页数 文件大小 规格书
24页 342K
描述
Dual Slot Hot Swap Controller for PCI Express

LTC4242 技术参数

是否无铅:含铅是否Rohs认证:符合
生命周期:Active包装说明:HVQCCN,
针数:38Reach Compliance Code:compliant
风险等级:5.16Is Samacsys:N
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PQCC-N38JESD-609代码:e3
长度:7 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:38最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN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):260
认证状态:Not Qualified座面最大高度:0.8 mm
最大供电电压 (Vsup):6 V最小供电电压 (Vsup):2.7 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
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:30
宽度:5 mmBase Number Matches:1

LTC4242 数据手册

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LTC4242  
Dual Slot Hot Swap  
Controller for PCI Express  
U
DESCRIPTIO  
FEATURES  
Allows Live Insertion into PCI Express® Backplane  
The LTC®4242 Hot SwapTM controller allows safe board  
insertion and removal for two independent slots on a PCI  
Expressbackplane.ExternalN-channeltransistorscontrol  
the12Vand3.3Vsupplieswhileintegratedswitchescontrol  
the 3.3V auxiliary supplies. Both 12V and 3.3V supplies  
can be ramped up at an adjustable rate. Dual level circuit  
breakersandfastactivecurrentlimitingprotectallsupplies  
against overcurrent faults.  
Controls Two Independent PCI Express Slots  
Independent Control of Main and Auxiliary Supplies  
20V Rating for 12V Supply Input Pins  
Integrated 0.25Ω AUX Switches  
Limits Fault Current in ≤1µs  
Force On Test Mode  
Adjustable Supply Voltage Power-Up Rate  
High Side Drivers for N-Channel MOSFETs  
A supply filter at the V pin allows the LTC4242 to endure  
CC  
Thermal Shutdown Protection  
supply transients. The EN input detects the presence of a  
card in the PCI Express slot. The FAULT and AUXFAULT  
outputs alert the system of overcurrent conditions on the  
main and auxiliary supplies, respectively. PGOOD and  
AUXPGOOD outputs indicate proper main and auxiliary  
supply outputs.  
Available in 38-Lead QFN and 36-Lead SSOP  
Packages  
U
APPLICATIO S  
PCI Express-Based PC and Servers  
Hot Swap Application for Triple Supply Systems  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
PCI Express Application  
12V  
12V  
OUT  
3.3V  
3.3V  
OUT  
Normal Power-Up Sequence  
12V  
12V  
12V  
12V  
3V  
3V  
3V  
SENSE1  
IN1  
SENSE1  
GATE1  
OUT1  
IN1  
GATE1  
V
3V  
CC  
OUT1  
ENn  
5V/DIV  
AUXOUT1  
3.3V  
OUT  
AUXOUTn  
5V/DIV  
3.3V  
AUXIN1  
BD_PRST1  
AUXON1  
ON1  
FON1  
EN1  
GND  
EN2  
FON2  
FAULT1  
AUXFAULT1  
PGOOD1  
PGOOD2  
AUXFAULT2  
FAULT2  
ON2  
PCIe  
PLUG-IN  
CONNECTOR CARD  
12V  
OUTn  
LTC4242G  
5V/DIV  
PCI EXPRESS  
HOT PLUG  
CONTROLLER  
3V  
5V/DIV  
OUTn  
BD_PRST2  
AUXON2  
AUXOUT2  
3.3V  
OUT  
PGOODn  
5V/DIV  
3V  
OUT2  
AUXIN2  
3.3V  
12V  
12V  
12V  
12V  
3V  
3V  
3V  
SENSE2 GATE2  
IN2  
SENSE2  
GATE2  
OUT2  
IN2  
4242 F04  
10ms/DIV  
3.3V  
3.3V  
12V  
OUT  
12V  
OUT  
4242 TA01a  
PCIe  
PLUG-IN  
CONNECTOR CARD  
4242f  
1

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