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LTC3731IUH#TRPBF PDF预览

LTC3731IUH#TRPBF

更新时间： 2024-09-24 12:59:07
品牌 Logo 应用领域
凌特 - Linear 控制器
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16页 201K
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LTC3731IUH#TRPBF 数据手册

 浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第2页浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第3页浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第4页浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第5页浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第6页浏览型号LTC3731IUH#TRPBF的Datasheet PDF文件第7页 
LT3782  
2-Phase Step-Up  
DC/DC Controller  
U
DESCRIPTIO  
FEATURES  
■
2-Phase Operation Reduces Required Input and  
The LT®3782 is a current mode two phase step-up DC/DC  
converter controller. Its high switching frequency (up to  
500kHz) and 2-phase operation reduce system filtering  
capacitance and inductance requirements.  
Output Capacitance  
■
Programmable Switching Frequency:  
150kHz to 500kHz  
6V to 40V Input Range  
10V Gate Drive with VCC ≥13V  
High Current Gate Drive (4A)  
■
With 10V gate drive (VCC ≥13V) and 4A peak drive current,  
the LT3782 can drive most industrial grade high power  
MOSFETs with high efficiency. For synchronous applica-  
tions, the LT3782 provides synchronous gate signals with  
programmable falling edge delay to avoid cross conduc-  
tion when using external MOSFET drivers. Other features  
include programmable undervoltage lockout, soft-start,  
current limit, duty cycle clamp (50% or higher) and slope  
compensation.  
■
■
■
Programmable Soft-Start and Current Limit  
■
Programmable Slope Compensation for  
High Noise Immunity  
■
MOSFET Gate Signals with Programmable  
Falling Edge Delay for External Synchronous  
Drivers  
■
Programmable Undervoltage Lockout  
■
■
The LT3782 is available in a thermally enhanced 28-lead  
SSOP package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 6144194.  
Programmable Duty Cycle Clamp (50% or Higher)  
Thermally EnhanUced 28-Lead SSOP Package  
APPLICATIO S  
■
Industrial Equipment  
■
Telecom Infrastructure  
■
Interleaved Isolated Power Supply  
U
TYPICAL APPLICATIO  
50V 4A Boost Converter  
V
V
IN  
10V TO 36V  
OUT  
50V, 4A  
L1  
L2  
C
D1  
OUT1  
Efficiency and Power Loss  
vs Load Current  
V
GBIAS1  
CC  
10µF  
50V  
2x  
30BQ060  
1µF  
R6  
+
GBIAS2  
GBIAS  
C3  
2µF  
825k  
D2  
97  
95  
93  
91  
89  
87  
85  
18  
15  
12  
9
+
C
OUT2  
220µF  
C
30BQ060  
IN  
V
IN  
= 24V  
RUN  
M1  
EFFICIENCY  
10µF  
50V  
2x  
BGATE1  
Si7852dp  
2x  
R8  
274k  
V
IN  
= 12V  
R
LT3782  
S1  
0.004Ω  
V
R
V
IN  
= 12V  
EE1  
SLOPE  
59k  
M2  
Si7852dp  
2x  
SLOPE  
DELAY  
DCL  
BGATE2  
V
IN  
= 24V  
6
L1, L2: PB2020.223  
, C : X7R, TDK  
C
R
IN OUT1  
FREQ  
80k  
R
POWER LOSS  
S2  
0.004Ω  
3
R
SET  
V
EE2  
+
10Ω  
10Ω  
10nF  
0
SS  
0
1
2
3
4
5
SENSE1  
SENSE1  
0.1µF  
I
(A)  
OUT  
10nF  
–
3782 TA01b  
R
F1  
475k  
V
C
+
–
13k  
6.8nF  
SENSE2  
SENSE2  
100pF  
R
F2  
24.9k  
FB  
GND  
3782 TA01  
3782fa  
1
1234567...16

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LTC3731IUH#TRPBF 替代型号

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LTC3731IUH#PBF Linear

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