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LT1170CT

更新时间： 2024-09-24 22:34:19
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
20页 269K
描述
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators

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中文翻译

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LT1170CT 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：TO-220包装说明：TO-220, ZIP5,.15,.2,67TB
针数：5Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.07模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：60 V最小输入电压：3 V
标称输入电压：15 VJESD-30 代码：R-PZFM-T5
JESD-609代码：e0长度：10.2235 mm
湿度敏感等级：1功能数量：1
端子数量：5最高工作温度：100 °C
最低工作温度：最大输出电流：5 A
标称输出电压：1.24 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-220封装等效代码：ZIP5,.15,.2,67TB
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：4.572 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：9 mA表面贴装：NO
切换器配置：BUCK-BOOST最大切换频率：115 kHz
技术：BIPOLAR温度等级：OTHER
端子面层：Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier端子形式：THROUGH-HOLE
端子节距：1.7 mm端子位置：ZIG-ZAG
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.89 mm
Base Number Matches：1

LT1170CT 数据手册

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LT1170/LT1171/LT1172  
100kHz, 5A, 2.5A and 1.25A  
High Efficiency Switching Regulators  
U
FEATURES  
DESCRIPTIO  
■
Wide Input Voltage Range: 3V to 60V  
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, inverting and “Cuk.” A high current, high effi-  
■
Low Quiescent Current: 6mA  
■
Internal 5A Switch (2.5A for LT1171,  
1.25A for LT1172)  
■
■
■
■
■
■
■
Shutdown Mode Draws Only 50µA Supply Current  
Very Few External Parts Required  
ciency switch is included on the die along with all oscilla-  
tor, control and protection circuitry. Integration of all  
functionsallowstheLT1170/LT1171/LT1172tobebuiltin  
astandard5-pinTO-3orTO-220powerpackageaswellas  
the 8-pin packages (LT1172). This makes them extremely  
easy to use and provides “bust proof” operation similar to  
Self-Protected Against Overloads  
Operates in Nearly All Switching Topologies  
Flyback-Regulated Mode Has Fully Floating Outputs  
Comes in Standard 5-Pin Packages  
LT1172 Available in 8-Pin MiniDIP and Surface Mount that obtained with 3-pin linear regulators.  
Packages  
Can Be Externally Synchronized  
The LT1170/LT1171/LT1172 operate with supply volt-  
■
ages from 3V to 60V, and draw only 6mA quiescent  
current. They can deliver load power up to 100W with no  
external power devices. By utilizing current-mode switch-  
ing techniques, they provide excellent AC and DC load and  
line regulation.  
U
APPLICATIO S  
■
Logic Supply 5V at 10A  
■
5V Logic to ±15V Op Amp Supply  
The LT1170/LT1171/LT1172 have many unique features  
not found even on the vastly more difficult to use low  
powercontrolchipspresentlyavailable. Theyuseadaptive  
antisat switch drive to allow very wide ranging load cur-  
rents with no loss in efficiency. An externally activated  
shutdown mode reduces total supply current to 50µA  
typically for standby operation.  
■
Battery Upconverter  
■
Power Inverter (+ to –) or (– to +)  
■
Fully Floating Multiple Outputs  
USER NOTE:  
Thisdatasheetisonlyintendedtoprovidespecifications,graphs,andageneralfunctionaldescription  
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. ThemanualcanalsobeusedfortheLT1170/LT1171/LT1172byfactoringinthehigher  
frequency. A CAD design program called SwitcherCADTM is also available.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
SwitcherCAD is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Boost Converter (5V to 12V)  
Maximum Output Power*  
L1**  
5V  
L2  
OUTPUT  
FILTER  
50µH  
100  
10µH  
* ROUGH GUIDE ONLY. BUCK MODE  
LT1170  
P
= (5A)(V  
)
OUT  
OUT  
C3  
100µF  
SPECIAL TOPOLOGIES DELIVER  
MORE POWER.  
80  
60  
40  
20  
0
D1  
** DIVIDE VERTICAL POWER SCALE  
BY TWO FOR LT1171, BY FOUR  
FOR LT1172.  
V
IN  
MBR330  
BUCK-BOOST  
= 30V  
12V  
1A  
V
SW  
V
O
+
R1  
BOOST  
C2  
1000µF  
10.7k  
LT1170/1/2 TA02  
LT1170  
FLYBACK  
+
1%  
C3*  
100µF  
FB  
V
GND  
C
R2  
1.24k  
1%  
R3  
1k  
C1  
1µF  
BUCK-BOOST  
V
O
= 5V  
0
10  
20  
30  
40  
50  
*REQUIRED IF INPUT LEADS ≥ 2"  
** COILTRONICS 50-2-52  
PULSE ENGINEERING 92114  
INPUT VOLTAGE (V)  
1170/1/2 TA01  
1
1234567...20

中文翻译

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