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LT3680IDD#TRMPBF

更新时间： 2024-02-17 04:40:51
品牌 Logo 应用领域
亚德诺 - ADI 开关光电二极管
页数 文件大小 规格书
24页 303K
描述
Switching Regulator

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中文翻译

获取价格

LT3680IDD#TRMPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
Reach Compliance Code：compliant风险等级：5.69
模拟集成电路 - 其他类型：SWITCHING REGULATORBase Number Matches：1

LT3680IDD#TRMPBF 数据手册

 浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第2页浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第3页浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第4页浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第5页浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第6页浏览型号LT3680IDD#TRMPBF的Datasheet PDF文件第7页 
LT3680  
36V, 3.5A, 2.4MHz  
Step-Down Switching Regulator  
with 75µA Quiescent Current  
FEATURES  
DESCRIPTION  
The LT®3680 is an adjustable frequency (200kHz to  
2.4MHz)monolithicbuckswitchingregulatorthataccepts  
■
Wide Input Voltage Range: 3.6V to 36V  
■
3.5A Maximum Output Current  
Low Ripple (<15mV ) Burst Mode® Operation:  
input voltages up to 36V. A high efficiency 95m switch  
is included on the die along with a boost Schottky diode  
and the necessary oscillator, control, and logic circuitry.  
Current mode topology is used for fast transient response  
and good loop stability. Low ripple Burst Mode® operation  
maintains high efficiency at low output currents while  
keeping output ripple below 15mV in a typical application.  
In addition, the LT3680 can further enhance low output  
current efficiency by drawing bias current from the output  
■
P-P  
IN  
I = 75μA at 12V to 3.3V  
Q
OUT  
■
■
■
■
■
■
■
■
■
■
■
Adjustable Switching Frequency: 200kHz to 2.4MHz  
Low Shutdown Current: I < 0.5μA  
Integrated Boost Diode  
Synchronizable Between 250kHz to 2MHz  
Power Good Flag  
Q
Saturating Switch Design: 95m On-Resistance  
0.790V Feedback Reference Voltage  
Output Voltage: 0.79V to 30V  
Thermal Protection  
Soft-Start Capability  
Small 10-Pin Thermally Enhanced MSOP and  
(3mm × 3mm) DFN Packages  
when V  
is above 3V. Shutdown reduces input supply  
OUT  
current to less than 1μA while a resistor and capacitor on  
the RUN/SS pin provide a controlled output voltage ramp  
(soft-start). A power good flag signals when V  
reaches  
OUT  
91% of the programmed output voltage. The LT3680 is  
available in 10-Pin MSOP and 3mm × 3mm DFN packages  
with exposed pads for low thermal resistance.  
APPLICATIONS  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of  
Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology  
Corporation. All other trademarks are the property of their respective owners.  
■
Automotive Battery Regulation  
■
Power for Portable Products  
■
Distributed Supply Regulation  
■
Industrial Supplies  
■
Wall Transformer Regulation  
TYPICAL APPLICATION  
5V Step-Down Converter  
Efficiency  
V
OUT  
100  
90  
80  
70  
60  
50  
V
IN  
5V  
6.3V TO 36V  
3.5A  
V
= 12V  
IN  
V
BD  
IN  
RUN/SS  
BOOST  
OFF ON  
V
= 34V  
IN  
V
= 24V  
IN  
0.47μF  
4.7μH  
536k  
15k  
V
C
SW  
LT3680  
GND  
10μF  
RT  
680pF  
PG  
V
= 5V  
OUT  
63.4k  
L = 4.7μH  
SYNC  
FB  
f = 600kHz  
100k  
47μF  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
OUTPUT CURRENT (A)  
3680 G01  
3680 TA01a  
3680fb  
1
1234567...24

中文翻译

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