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LTC1154_11

更新时间： 2024-01-11 14:08:30
品牌 Logo 应用领域
凌特 - Linear 驱动器
页数 文件大小 规格书
18页 183K
描述
High Side Micropower MOSFET Driver Fully Enhances N-Channel Power MOSFETs

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中文翻译

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LTC1154_11 数据手册

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LTC1154  
High Side Micropower  
MOSFET Driver  
FEATURES  
DESCRIPTION  
TheLTC®1154singlehighsidegatedriverallowsusinglow  
costN-channelFETsforhighsideswitchingapplications.An  
internal charge pump boosts the gate drive voltage above  
thepositiverail, fullyenhancinganN-channelMOSswitch  
withnoexternalcomponents. Micropoweroperation, with  
8μA standby current and 85μA operating current, allows  
use in virtually all systems with maximum efficiency.  
n
Fully Enhances N-Channel Power MOSFETs  
n
8μA I Standby Current  
Q
n
85μA I ON Current  
Q
n
No External Charge Pump Capacitors  
n
4.5V to 18V Supply Range  
Short-Circuit Protection  
n
n
Thermal Shutdown via PTC Thermistor  
n
Status Output Indicates Shutdown  
Included on chip is programmable overcurrent sensing.  
A time delay can be added to prevent false triggering on  
high inrush current loads. An active high shutdown input  
is also provided and interfaces directly to a standard PTC  
thermistor for thermal shutdown. An open-drain output  
is provided to report switch status to the μP. An active  
low enable input is provided to control multiple switches  
in banks.  
n
Available in 8-Pin SOIC and PDIP Packages  
APPLICATIONS  
n
Laptop Computer Power Switching  
n
SCSI Termination Power Switching  
n
Cellular Telephone Power Management  
Battery Charging and Management  
High Side Industrial and Automotive Switching  
Stepper Motor and DC Motor Control  
n
n
The LTC1154 is available in both 8-pin DIP and 8-pin SOIC  
packages.  
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Ultralow Voltage Drop High Side Switch with  
Short-Circuit Protection  
Standby Supply Current  
50  
V
J
= 0V  
= 25°C  
IN  
5V  
45  
40  
35  
30  
25  
20  
15  
10  
5
T
51k  
0.036Ω*  
2.7A MAX  
IN  
V
S
0.1μF**  
200k**  
μP  
EN  
DS  
G
LTC1154  
STATUS  
GND  
IRLR024  
SD  
5V  
LOAD  
0
0
5
10  
15  
20  
LTC1154 • TA01  
ALL COMPONENTS SHOWN ARE SURFACE MOUNT.  
* IMS026 INTERNATIONAL MANUFACTURING SERVICE, INC. (401) 683-9700  
** NOT REQUIRED IF LOAD IS RESISTIVE OR INDUCTIVE.  
SUPPLY VOLTAGE (V)  
LTC1153 • TA02  
1154fb  
1
1234567...18

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