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LTC1421-2.5 PDF预览

LTC1421-2.5

更新时间： 2024-11-11 22:08:51
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
24页 467K
描述
Hot Swap Controller

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中文翻译

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LTC1421-2.5 数据手册

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LTC1421/LTC1421-2.5  
Hot Swap Controller  
U
DESCRIPTION  
FEATURES  
■
Allows Safe Board Insertion and Removal from a  
The LTC®1421/LTC1421-2.5 are Hot SwapTM controllers  
that allow a board to be safely inserted and removed from a  
live backplane. Using external N-channel pass transistors,  
the board supply voltages can be ramped up at a program-  
mable rate. Two high side switch drivers control the N-  
channel gates for supply voltages ranging from 3V to 12V.  
Live Backplane  
■
System Reset and Power Good Control Outputs  
■
Programmable Electronic Circuit Breaker  
User Programmable Supply Voltage Power-Up Rate  
High Side Driver for Two External N-Channels  
Controls Supply Voltages from 3V to 12V  
Connection Inputs Detect Board Insertion or Removal  
Undervoltage Lockout  
Power-On Reset Input  
■
■
■
Aprogrammableelectroniccircuitbreakerprotectsagainst  
shorts. Warning signals indicate that the circuit breaker  
hastripped,apowerfailurehasoccurredorthattheswitch  
drivers are turned off. The reset output can be used to  
generate a system reset when the power cycles or a fault  
occurs. The two connect inputs can be used with stag-  
gered connector pins to indicate board insertion or re-  
moval. The power-on reset input can be used to cycle the  
board power or clear the circuit breaker.  
■
■
■
U
APPLICATIONS  
■
Hot Board Insertion  
Electronic Circuit Breaker  
■
The trip point of the ground sense comparator is set at  
0.1V for LTC1421 and 2.5V for LTC1421-2.5.  
The LTC1421/LTC1421-2.5 are available in 24-pin SO and  
SSOP packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Q3  
1/2 Si4936DY  
V
EE  
–12V  
1A  
C3  
C5  
R4  
20k  
5%  
0.47µF  
+
+
220µF  
V
EE  
R2  
Q2  
V
12V  
1A  
0.025Ω 1/2 Si4936DY  
DD  
V
DD  
C3  
220µF  
R1  
Q1  
0.005Ω MTB50N06E  
V
5V  
5A  
CC  
V
CC  
+
R6  
C4  
220µF  
20k  
1%  
C2  
0.1µF  
23  
22  
21  
20  
19  
18  
17  
16  
D1  
R5  
16k  
5%  
V
SETLO GATELO V  
V
SETHI GATEHI V  
CCLO  
OUTLO CCHI  
OUTHI  
10  
9
14  
13  
8
11  
15  
6
RAMP  
R3  
1k  
2
24  
CON2  
AUXV  
CPON  
–
COMP  
COMP  
CC  
R7  
C1  
1µF  
1µF  
+
7.15k  
1%  
LTC1421  
REF  
FB  
COMPOUT  
PWRGD  
RESET  
4
µP  
FAULT  
POR  
FAULT  
I/O  
I/O  
3
1
POR  
7
CON1  
RESET  
GND  
12  
DISABLE  
5
1
13  
12  
GND  
BEA  
BEB  
GND  
V
CC  
DATA BUS  
DATA  
BUS  
1421 TA01  
QS3384  
QuickSwitch®  
QuickSwitch IS A REGISTERED TRADEMARK  
OF QUALITY SEMICONDUCTOR CORPORATION.  
BACKPLANE  
PC BOARD  
1
1234567...24

中文翻译

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