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LTC1643AL_15

更新时间： 2024-09-16 01:13:23
品牌 Logo 应用领域
凌特 - Linear PC
页数 文件大小 规格书
16页 242K
描述
PCI-Bus Hot Swap Controller

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中文翻译

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LTC1643AL_15 数据手册

 浏览型号LTC1643AL_15的Datasheet PDF文件第2页浏览型号LTC1643AL_15的Datasheet PDF文件第3页浏览型号LTC1643AL_15的Datasheet PDF文件第4页浏览型号LTC1643AL_15的Datasheet PDF文件第5页浏览型号LTC1643AL_15的Datasheet PDF文件第6页浏览型号LTC1643AL_15的Datasheet PDF文件第7页 
LTC1643AL  
LTC1643AL-1/LTC1643AH  
PCI-Bus Hot Swap  
Controller  
U
FEATURES  
DESCRIPTIO  
TheLTC®1643AisaHotSwapTM controllerthatallowsaboard  
to be safely inserted and removed from a live PCI-Bus slot.  
Two external N-channel transistors control the 3.3V and 5V  
supplies while on-chip switches control the –12V and 12V  
supplies. Allsupplyvoltagescanberampedupataprogram-  
mable rate. An electronic circuit breaker protects all four  
suppliesagainstovercurrentfaults.Thefoldbackcurrentlimit  
feature limits current spikes and power dissipation when  
shortsoccurandallowsboardswithlargecapacitancestobe  
poweredupwithouttrippingthecircuitbreaker. ThePWRGD  
output indicates when all of the supply voltages are within  
tolerance and the FAULT output indicates an overcurrent  
condition. The ON(LTC1643AH)/ON (LTC1643AL/  
LTC1643AL-1) pin is used to cycle the board power or reset  
the circuit breaker. The LTC1643AL-1 has the ±12V power  
good comparators disabled.  
■
Allows Safe Board Insertion and Removal from a  
Live PCI Slot  
■
Works on either a Motherboard (LTC1643AH) or  
CompactPCITM Card (LTC1643AL/LTC1643AL-1)  
■
Controls –12V, 3.3V, 5V, 12V Supplies  
■
Programmable Foldback Current Limit with  
Circuit Breaker  
■
User-Programmable Supply Voltage Power-Up Rate  
■
High Side Drive for External N-Channel MOSFETs  
■
–12V and 12V On-Chip Switches  
Fault and Power-Good Outputs  
■
■
Available in a Narrow 16-Lead SSOP Package  
U
APPLICATIO S  
■
PCI-Based Servers  
CompactPCICompliant Boards  
■
TheLTC1643Aisavailableina16-pinnarrowSSOPpackage.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Hot Swap is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATION  
Hot Swappable PCI Supply  
R1  
0.007Ω  
Q1  
IRF7413  
5V  
5A  
R6  
10Ω  
R2  
0.005Ω  
Q2  
IRF7413  
3.3V  
7.6A  
GND  
SYSTEM  
POWER  
SUPPLY  
R5  
10Ω  
R7  
100Ω  
C1  
0.047µF  
9
10  
11  
3
13  
12  
14  
3V  
IN  
3V  
GATE 3V  
5V  
IN  
5V  
5V  
OUT  
SENSE  
OUT  
SENSE  
8
GND  
1
2
12V  
IN  
V
EEIN  
16  
5
6
7
12V  
12V  
OUT  
ON  
500mA  
LTC1643AH  
R3  
15  
4
–12V  
100mA  
V
EEOUT  
10k  
PCI  
FAULT  
POWER  
SYSTEM  
CONTROLLER  
TIMER  
R4  
10k  
C2  
0.1µF  
PWRGD  
LOGIC  
RESET  
RESET  
1643A TA01  
1643afb  
1
1234567...16

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