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LTC1645C PDF预览

LTC1645C

更新时间： 2024-11-08 22:57:35
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
24页 315K
描述
Dual-Channel Hot Swap Controller/Power Sequencer

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中文翻译

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LTC1645C 数据手册

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LTC1645  
Dual-Channel Hot Swap  
Controller/Power Sequencer  
U
FEATURES  
DESCRIPTIO  
The LTC®1645 is a 2-channel Hot SwapTM controller that  
allows a board to be safely inserted and removed from a  
livebackplane. UsingexternalN-channelpasstransistors,  
the supply voltages can be ramped at a programmable  
rate. Two high side switch drivers control the N-channel  
gates for supply voltages ranging from 1.2V to 12V. The  
two channels can be set to ramp up and down separately,  
ortheycanbeprogrammedtoriseandfallsimultaneously,  
ensuring power supply tracking at the two outputs.  
■
Allows Safe Board Insertion and Removal from a  
Live Backplane  
■
Programmable Power Supply Sequencing  
■
Programmable Electronic Circuit Breaker  
■
User-Programmable Supply Voltage Power-Up and  
Power-Down Rate  
■
High Side Drivers for External N-Channel FETs  
■
Controls Supply Voltages from 1.2V to 12V  
■
Ensures Proper Power-Up Behavior  
Undervoltage Lockout  
■
Programmable electronic circuit breakers protect against  
shorts at either output. The RESET output can be used to  
generate a system reset when a supply voltage falls below  
a user-programmed voltage. An additional spare com-  
parator is available for monitoring a second supply  
voltage.  
■
Glitch Filter Protects Against Spurious RESET Signals  
U
APPLICATIO S  
■
Hot Board Insertion  
■
TheLTC1645isavailableinthe8-and14-pinSOpackages.  
Power Supply Sequencing  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Electronic Circuit Breaker  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
5V and 3.3V Hot Swap  
5V and 3.3V Hot Swap Waveforms  
V
3.3V  
5A  
0.005Ω*  
IRF7413  
OUT2  
V
IN2  
IN1  
+
+
C
C
LOAD2  
ON  
5V/DIV  
V
5V  
5A  
0.005Ω*  
IRF7413  
OUT1  
V
10Ω  
LOAD1  
GATEn  
10V/DIV  
10Ω  
0.01µF  
25V  
0.01µF  
25V  
VOUT2  
5V/DIV  
7
6
3
2
1
SENSE1 GATE1  
V
SENSE2 GATE2  
CC2  
8
V
CC1  
VOUT1  
5V/DIV  
LTC1645  
(8-LEAD)  
5
ON  
ON  
10k  
GND  
4
1645 TA01  
GND  
*LRF1206-01-R005-J (IRC)  
BACKPLANE PLUG-IN CARD  
1
1234567...24

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