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LTC3769IFE#PBF

更新时间： 2024-09-24 18:53:27
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
32页 432K
描述
LTC3769 - 60V Low IQ Synchronous Boost Controller; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3769IFE#PBF 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：TSSOP包装说明：4.40 MM, LEAD FREE, PLASTIC, TSSOP-20
针数：20Reach Compliance Code：compliant
风险等级：2.22Base Number Matches：1

LTC3769IFE#PBF 数据手册

 浏览型号LTC3769IFE#PBF的Datasheet PDF文件第2页浏览型号LTC3769IFE#PBF的Datasheet PDF文件第3页浏览型号LTC3769IFE#PBF的Datasheet PDF文件第4页浏览型号LTC3769IFE#PBF的Datasheet PDF文件第5页浏览型号LTC3769IFE#PBF的Datasheet PDF文件第6页浏览型号LTC3769IFE#PBF的Datasheet PDF文件第7页 
LTC3769  
60V Low I Synchronous  
Q
Boost Controller  
FEATURES  
DESCRIPTION  
n
Synchronous Operation for Highest Efficiency and  
The LTC®3769 is a high performance single output syn-  
chronous boost converter controller that drives an all  
N-channel power MOSFET stage. Synchronous rectifica-  
tion increases efficiency, reduces power losses and eases  
thermal requirements, simplifying high power boost ap-  
plications. The 28µA no-load quiescent current extends  
operating run time in battery-powered systems.  
Reduced Heat Dissipation  
n
Wide V Range: 4.5V to 60V (65V Abs Max);  
IN  
Operates Down to 2.3V After Start-Up  
Output Voltage Up to 60V  
n
n
n
n
n
n
n
n
n
n
n
±±1 ±.200V Reference Voltage  
R
or Inductor DCR Current Sensing  
SENSE  
±001 Duty Cycle Capability for Synchronous MOSFET  
A 4.5V to 60V input supply range encompasses a wide  
range of system architectures and battery chemistries.  
When biased from the output of the boost converter or  
anotherauxiliarysupply, theLTC3769canoperatefroman  
input supply as low as 2.3V after start-up. The operating  
frequency can be set within a 50kHz to 900kHz range or  
synchronized to an external clock using the internal PLL.  
Low Quiescent Current: 28μA  
Phase-Lockable Frequency (75kHz to 850kHz)  
Programmable Fixed Frequency (50kHz to 900kHz)  
Power Good Output Voltage Monitor  
Low Shutdown Current: 4µA  
Internal LDO Powers Gate Drive from VBIAS or EXTV  
CC  
Thermally Enhanced Low Profile 24-Pin 4mm × 4mm  
The SS pin ramps the output voltage during start-up. The  
PLLIN/MODE pin selects Burst Mode® operation, pulse-  
skipping mode or forced continuous mode at light loads.  
QFN Package and 20-Lead TSSOP Package  
APPLICATIONS  
L, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are registered  
trademarks of Linear Technology Corporation. All other trademarks are the property of their  
respective owners. Protected by U. S. Patents, including 5408150, 5481178, 5705919,  
5929620, 6177787, 6498466, 6580258, 6611131.  
n
Industrial  
n
Automotive  
n
Medical  
Military  
n
TYPICAL APPLICATION  
±20W, ±2V to 24V/5A Synchronous Boost Converter  
Efficiency and Power Loss  
vs Output Current  
3.3µH  
100  
90  
80  
70  
60  
50  
40  
10  
1
4mΩ  
V
V
IN  
OUT  
24V/5A  
4.5V TO 60V  
22µF  
220µF  
DOWN TO 2.3V  
AFTER START-UP IF  
VBIAS IS POWERED  
VBIAS  
EFFICIENCY  
+
–
SENSE  
SENSE  
RUN  
SS  
10nF  
V
FOLLOWS V FOR V > 24V  
IN IN  
OUT  
FROM V  
OUT  
BG  
LTC3769  
8.66K  
100pF  
POWER  
LOSS  
0.1  
15nF  
ITH  
TG  
0.01  
SW  
PLLIN/MODE  
FREQ  
0.1µF  
BOOST  
0.001  
OVMODE  
ILIM  
0.0001 0.001  
0.01  
0.1  
1
10  
OUTPUT CURRENT (A)  
INTV  
CC  
3769 TA01b  
4.7µF  
232k  
VFB  
PGOOD  
EXTV  
CC  
12.1k  
GND  
3769 TA01a  
3769fa  
1
For more information www.linear.com/LTC3769  
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中文翻译

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LTC3769IFE#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3769MPFE#PBF Linear

完全替代

 LTC3769 - 60V Low IQ Synchronous Boost Controller; Package: TSSOP; Pins: 20; Temperature R

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