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LT1161ISW#TRPBF

更新时间： 2024-11-13 13:09:31
品牌 Logo 应用领域
凌特 - Linear 驱动器
页数 文件大小 规格书
12页 291K
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LT1161ISW#TRPBF 数据手册

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LT1161  
Quad Protected High-Side  
MOSFET Driver  
U
FEATURES  
DESCRIPTION  
■
Fully Enhances N-Channel MOSFET Switches  
The LT1161 is a quad high-side gate driver allowing the  
use of low cost N-channel power MOSFETs for high-side  
switching applications. It has four independent switch  
channels, each containing a completely self-contained  
charge pump to fully enhance an N-channel MOSFET  
switch with no external components.  
■
8V to 48V Power Supply Range  
■
Protected from –15V to 60V Supply Transients  
■
Individual Short-Circuit Protection  
■
Individual Automatic Restart Timers  
Programmable Current Limit, Delay Time, and  
Auto-Restart Period  
Voltage-Limited Gate Drive  
Defaults to OFF State with Open Input  
Flowthrough Input to Output Pinout  
■
Also included in each switch channel is a drain sense  
comparator that is used to sense switch current. When a  
preset current level is exceeded, the switch is turned off.  
The switch remains off for a period of time set by an  
external timing capacitor and then automatically attempts  
to restart. If the fault is still present, this cycle repeats until  
the fault is removed, thus protecting the MOSFET.  
■
■
■
■
Available in 20-Lead DIP or SOL Package  
U
APPLICATIONS  
■
The LT1161 has been specifically designed for harsh  
operating environments such as industrial, avionics, and  
automotive applications where poor supply regulation  
and/or transients may be present. The device will not  
sustain damage from supply voltages of –15V to 60V.  
Industrial Control  
Avionics Systems  
Automotive Switches  
Stepper Motor and DC Motor Control  
Electronic Circuit Breaker  
■
■
■
■
U
TYPICAL APPLICATION  
24V  
+
Switch Drop vs Load Current  
50µF  
50V  
C
T
R
+
+
0.50  
0.45  
0.40  
0.35  
0.30  
0.25  
0.20  
0.15  
0.10  
0.05  
0
S
V
V
0.1µF  
0.1µF  
0.1µF  
0.01Ω  
DS1  
G1  
T1  
T2  
T3  
T4  
IRFZ34  
LOAD  
#1  
0.01Ω  
DS2  
G2  
IRFZ34  
0.1µF  
LT1161  
LOAD  
#2  
0.01Ω  
DS3  
G3  
IN1  
IN2  
IN3  
IN4  
INPUTS  
IRFZ34  
LOAD  
#3  
DS4  
G4  
0.01Ω  
GND  
GND  
IRFZ34  
0
1
2
3
4
5
LOAD  
#4  
LOAD CURRENT (A)  
1161 TA01  
1161 F01  
Figure 1. Protected Quad High-Side Switch  
1
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LT1161ISW#TRPBF 替代型号

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LT1161ISW#PBF Linear

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