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LTC4240IGN PDF预览

LTC4240IGN

更新时间： 2024-01-13 07:13:15
品牌 Logo 应用领域
凌特 - Linear 控制器PC
页数 文件大小 规格书
28页 489K
描述
CompactPCI Hot Swap Controller with I2C Compatible Interface

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LTC4240IGN 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：SSOP,
针数：28Reach Compliance Code：compliant
风险等级：5.16可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：9.893 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：28
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：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：250认证状态：Not Qualified
座面最大高度：1.748 mm标称供电电压 (Vsup)：12 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.899 mm
Base Number Matches：1

LTC4240IGN 数据手册

 浏览型号LTC4240IGN的Datasheet PDF文件第2页浏览型号LTC4240IGN的Datasheet PDF文件第3页浏览型号LTC4240IGN的Datasheet PDF文件第4页浏览型号LTC4240IGN的Datasheet PDF文件第5页浏览型号LTC4240IGN的Datasheet PDF文件第6页浏览型号LTC4240IGN的Datasheet PDF文件第7页 
LTC4240  
CompactPCI Hot Swap  
2
Controller with I C Compatible Interface  
U
FEATURES  
DESCRIPTIO  
TheLTC®4240isaHotSwapTM controllerthatallowsaboard  
to be safely inserted and removed from a live CompactPCI  
busslot. The LTC4240 has a built-in 2-wire I2C compatible  
interface to allow software control and monitoring of  
device function and power supply status. Two external  
N-channel transistors control the 3.3V and 5V supplies,  
while two internal switches control the –12V and 12V  
supplies.Electroniccircuitbreakersprotectallfoursupplies  
against overcurrent faults. The PWRGD output indicates  
when all of the supply voltages are within tolerance. The  
OFF/ON pin is used to cycle the board power or reset the  
circuitbreaker. The I2C interface allows the user to turn the  
device off or on, set RESETOUT, turn on the status LED  
driver and ignore 12V, –12V faults. It also allows the user  
to read the status of the FAULT, RESETIN, RESETOUT,  
PWRGD, PRSNT1# and PRSNT2# pins. Under a fault  
condition, the I2C interface can also be used to determine  
whichofthefoursuppliesgeneratedthefault.TheLTC4240  
is available in a 28-pin narrow SSOP package.  
■
Allows Safe Board Insertion and Removal from a  
Live CompactPCITM Bus  
I2CTM Compatible 2-Wire Interface  
PRECHARGE Output Biases I/O Pins During Card  
Insertion and Extraction  
■
■
■
■
■
■
■
■
■
■
Controls 3.3V, 5V, 12V and –12V Supplies  
Foldback Current Limit with Circuit Breaker  
LOCAL_PCI_RST# Logic On-Board  
QuickSwitch® Enable Output  
Status LED Driver  
User Programmable Supply Voltage Power-Up Rate  
Registers Individual Supply Faults  
Available in a 28-Pin Narrow SSOP Package  
U
APPLICATIO S  
■
Hot Board Insertion into CompactPCI Bus  
■
Electronic Circuit Breaker  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
QuickSwitch is a registered trademark of Quality Semiconductor Corp.  
CompactPCI is a trademark of the PCI Industrial Computer Manufacturers Group.  
I2C is a trademark of Philips Electronics N.V.  
U
TYPICAL APPLICATIO  
CompactPCI CompactPCI  
BACKPLANE BACKPLANE  
C11  
10nF  
CONNECTOR CONNECTOR  
R2  
0.007Ω  
Q2  
Si7880DP  
(MALE)  
(FEMALE)  
Z4  
Z3  
5V  
IN  
5V  
OUT  
MEDIUM 5V  
LONG 5V  
MEDIUM 3.3V  
LONG 3.3V  
5V AT 5A  
R1  
0.005Ω  
+
Q1  
R22, 2.74Ω  
R21, 1.74Ω  
C
(5V )  
OUT  
LOAD  
Si7880DP  
3V  
IN  
3V  
OUT  
3.3V AT 7.6A  
+
C7  
0.01µF  
PER  
C8  
0.01µF  
PER  
R19  
2.55k  
1%  
C
LOAD  
(3V  
)
OUT  
C1  
0.047µF  
C10  
10nF  
R3  
10Ω  
R4  
10Ω  
R5  
1k  
5V  
IN  
PIN  
PIN  
R20  
1.91k  
1%  
LONG V(I/O)  
C9  
10nF  
3V  
IN  
ADDRIN  
SCL  
SDA  
PRSNT2#  
PRSNT1#  
3V  
GATE 3V  
5V  
5V  
5V  
OUT  
R12  
10k  
SENSE  
OUT  
IN  
SENSE  
R10  
100Ω  
DGND  
R25, 1.2k  
SCL  
SDA  
R28, 200Ω  
LED  
12V  
OUT  
12V AT 500mA  
(12V  
12V  
OUT  
+
+
12V  
IN  
12V  
C
C
)
OUT  
LOAD  
–12V  
V
EEIN  
V
LTC4240  
EEOUT  
–12V AT 100mA  
V
R18  
1k  
EEOUT  
5V  
IN  
R17, 1.2k  
TIMER  
(V  
)
C2  
0.1µF  
LOAD EEOUT  
OFF/ON  
FAULT  
BD_SEL#  
EARLY  
V(I/O)  
TO  
QUICKSWITCH®  
ENABLE  
Z1  
BE  
R15  
R29  
10Ω  
R16  
10k  
2k  
HEALTHY#  
PCI_RST#  
PWRGD  
RESETIN  
GND  
RESETOUT  
3V  
OUT  
R6  
10k  
C6  
0.01µF  
LOCAL_PCI_RST#  
R30  
1k  
PRECHARGE  
DRIVE  
Q3  
R13  
10Ω  
C4  
R14  
10Ω  
C5  
Z2  
TO PCI BRIDGE  
DEVICE OR  
EQUIVALENT  
R8, 1k  
R7, 12Ω  
R9  
24Ω  
R11  
18Ω  
Z1, Z2: SMAJ12CA  
Z3, Z4: IPMT5.0AT3  
C3, 4.7nF  
0.01µF  
0.01µF  
3V  
IN  
GROUND  
4240 TA01  
MMBT2222A  
4240f  
1
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