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LT1172MJ8#TRPBF PDF预览

LT1172MJ8#TRPBF

更新时间： 2024-11-24 17:23:03
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 230K
描述
IC IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR,DIP,8PIN,CERAMIC, Switching Regulator or Controller

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中文翻译

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LT1172MJ8#TRPBF 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：DIP, DIP8,.3
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.84
控制模式：CURRENT-MODEJESD-30 代码：R-XDIP-T8
JESD-609代码：e3湿度敏感等级：1
端子数量：8最大输出电流：1.25 A
封装主体材料：CERAMIC封装代码：DIP
封装等效代码：DIP8,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：225
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：NO最大切换频率：115 kHz
技术：BIPOLAR端子面层：MATTE TIN
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LT1172MJ8#TRPBF 数据手册

 浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第2页浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第3页浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第4页浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第5页浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第6页浏览型号LT1172MJ8#TRPBF的Datasheet PDF文件第7页 
LT1170/LT1171/LT1172  
100kHz, 5A, 2.5A and 1.25A  
High Efficiency Switching Regulators  
FEATURES  
DESCRIPTION  
The LT®1170/LT1171/LT1172 are monolithic high power-  
switching regulators. They can be operated in all standard  
switching configurations including buck, boost, flyback,  
forward,invertingand“Cuk.”Ahighcurrent,highefficiency  
n
Wide Input Voltage Range: 3V to 60V  
n
Low Quiescent Current: 6mA  
Internal 5A Switch  
n
(2.5A for LT1171, 1.25A for LT1172)  
n
switch is included on the die along with all oscillator, con-  
trol and protection circuitry. Integration of all functions  
allowstheLT1170/LT1171/LT1172tobebuiltinastandard  
5-pin TO-3 or TO-220 power package as well as the 8-pin  
packages (LT1172). This makes them extremely easy to  
use and provides “bust proof” operation similar to that  
obtained with 3-pin linear regulators.  
Shutdown Mode Draws Only 50μA Supply Current  
n
Very Few External Parts Required  
Self-Protected Against Overloads  
n
n
Operates in Nearly All Switching Topologies  
n
Flyback-Regulated Mode Has Fully Floating Outputs  
n
Comes in Standard 5-Pin Packages  
n
n
LT1172 Available in 8-Pin MiniDIP and  
Surface Mount Packages  
The LT1170/LT1171/LT1172 operate with supply voltages  
from 3V to 60V, and draw only 6mA quiescent current.  
They can deliver load power up to 100W with no exter-  
nal power devices. By utilizing current-mode switching  
techniques, they provide excellent AC and DC load and  
line regulation.  
Can Be Externally Synchronized  
APPLICATIONS  
n
Logic Supply 5V at 10A  
n
5V Logic to 15V Op Amp Supply  
n
Battery Upconverter  
TheLT1170/LT1171/LT1172havemanyuniquefeaturesnot  
found even on the vastly more difficult to use low power  
controlchipspresentlyavailable.Theyuseadaptiveantisat  
switch drive to allow very wide ranging load currents with  
no loss in efficiency. An externally activated shutdown  
mode reduces total supply current to 50μA typically for  
standby operation.  
n
Power Inverter (+ to –) or (– to +)  
n
Fully Floating Multiple Outputs  
USER NOTE:  
This data sheet is only intended to provide specifications, graphs, and a general functional  
description of the LT1170/LT1171/LT1172. Application circuits are included to show the capability  
of the LT1170/LT1171/LT1172. A complete design manual (AN19) should be obtained to assist in  
developing new designs. This manual contains a comprehensive discussion of both the LT1070  
and the external components used with it, as well as complete formulas for calculating the values  
of these components. The manual can also be used for the LT1170/LT1171/LT1172 by factoring in  
the higher frequency. A CAD design program called SwitcherCAD® is also available.  
L, LT, LTC, LTM, Linear Technology, the Linear logo and SwitcherCAD are registered  
trademarks of Linear Technology Corporation. All other trademarks are the property of their  
respective owners.  
TYPICAL APPLICATION  
Boost Converter (5V to 12V)  
Maximum Output Power*  
100  
* ROUGH GUIDE ONLY. BUCK MODE  
L1**  
5V  
L2  
OUTPUT  
FILTER  
LT1170  
P
= (5A)(V  
)
50μH  
OUT  
OUT  
10μH  
SPECIAL TOPOLOGIES DELIVER  
MORE POWER.  
80  
60  
40  
20  
0
C3  
100μF  
** DIVIDE VERTICAL POWER SCALE  
BY TWO FOR LT1171, BY FOUR  
FOR LT1172.  
BUCK-BOOST  
= 30V  
D1  
V
O
V
IN  
MBR330  
12V  
1A  
BOOST  
V
SW  
LT1170/1/2 TA02  
FLYBACK  
+
R1  
C2  
1000μF  
10.7k  
LT1170  
+
1%  
C3*  
100μF  
FB  
V
C
GND  
BUCK-BOOST  
R2  
1.24k  
1%  
V
= 5V  
R3  
1k  
C1  
1μF  
O
0
10  
20  
30  
40  
50  
INPUT VOLTAGE (V)  
*REQUIRED IF INPUT LEADS r 2"  
** COILTRONICS 50-2-52  
PULSE ENGINEERING 92114  
1170/1/2 TA01  
117012fg  
1
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