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LT1737CGN#TR PDF预览

LT1737CGN#TR

更新时间： 2024-10-03 13:09:35
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
28页 321K
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中文翻译

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LT1737CGN#TR 数据手册

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LT1737  
High Power  
Isolated Flyback Controller  
U
FEATURES  
DESCRIPTIO  
■
Drives External Power MOSFET  
The LT®1737 is a monolithic switching regulator control-  
ler specifically designed for the isolated flyback topology.  
It drives the gate of an external MOSFET and is generally  
powered from a DC supply voltage. Output voltage feed-  
back information may be supplied by a variety of methods  
including a third transformer winding, the primary wind-  
ing or even direct DC feedback (see Applications Informa-  
tion). Its gate drive capability, coupled with a suitable  
external MOSFET and other power path components, can  
deliver load power up to tens of Watts.  
■
Supply Voltage Range: 4.5V to 20V  
■
Flyback Voltage Limited Only by  
External Components  
■
Senses Output Voltage Directly from Primary Side  
Winding—No Optoisolator Required  
■
Switching Frequency from 50kHz to 250kHz  
with External Capacitor  
■
Moderate Accuracy Regulation Without User Trims  
■
Regulation Maintained Well into Discontinuous Mode  
■
External ISENSE Resistor  
The LT1737 has a number of features not found on other  
isolated flyback controller ICs. By utilizing current mode  
switchingtechniques, itprovidesexcellentACandDCline  
regulation. Its unique control circuitry can maintain regu-  
lation well into discontinuous mode in most applications.  
Optionalloadcompensationcircuitryallowsforimproved  
load regulation. An optional undervoltage lockout pin  
halts operation when the application input voltage is too  
low. An optional external capacitor implements a soft-  
start function.  
■
Optional Load Compensation  
■
Optional Undervoltage Lockout  
■
Shutdown Feature Reduces IQ to 50µA Typ  
■
Available in 16-Pin GN and SO Packages  
U
APPLICATIO S  
■
Isolated Flyback Switching Regulators  
Medical Instruments  
Instrumentation Power Supplies  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
12V-18V to Isolated 15V Converter  
R2  
35.7k  
1%  
V
IN  
+
C1  
22µF  
T1  
D1  
COILTRONICS  
CTX150-4  
D2  
MBRS1100  
BAS16  
Q1  
2N3906  
V
= 15V  
= 300mA  
OUT  
OUT  
I
•
+
240k  
33k  
R4  
7.5k  
C2  
33µF  
150µH  
150µH  
•
C3  
0.1µF  
UVLO  
V
CC  
M1  
FB  
GATE  
IRFL014  
LT1737  
ENDLY MINENAB R  
V
C
I
SENSE  
R3  
3.01k  
1%  
OSCAP  
t
R
SGND  
PGND  
R1  
0.27Ω  
ON  
OCMP  
CMPC  
NOTE: SEE APPLICATIONS  
75k  
150k 100k  
4.7k  
0.1µF  
1nF  
47pF  
INFORMATION FOR ADDITIONAL  
COMPONENT SPECIFICATIONS  
1737 TA01  
1737f  
1
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中文翻译

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LT1737CGN#TR 替代型号

型号 品牌 替代类型 描述 数据表
LT1737CGN Linear

完全替代

 High Power Isolated Flyback Controller
LT1737IGN#PBF Linear

功能相似

 LT1737 - High Power Isolated Flyback Controller; Package: SSOP; Pins: 16; Temperature Rang
LT1737IGN#TRPBF Linear

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LT1737CS#TR Linear

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LT1737CS#TRPBF Linear

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 		LT1737 - High Power Isolated Flyback Controller; Package: SO; Pins: 16; Temperature Range:
LT1737IGN Linear

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 		High Power Isolated Flyback Controller
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 		LT1737 - High Power Isolated Flyback Controller; Package: SSOP; Pins: 16; Temperature Rang
LT1737IGN#TRPBF Linear

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 		暂无描述
LT1737IS Linear

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 		High Power Isolated Flyback Controller
LT1737IS#PBF Linear

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 		LT1737 - High Power Isolated Flyback Controller; Package: SO; Pins: 16; Temperature Range:

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