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LT3502EMS-PBF PDF预览

LT3502EMS-PBF

更新时间: 2024-11-04 05:43:31
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
24页 387K
描述
1.1MHz/2.2MHz, 500mA Step-Down Regulators in 2mm × 2mm DFN and MS10

LT3502EMS-PBF 数据手册

 浏览型号LT3502EMS-PBF的Datasheet PDF文件第2页浏览型号LT3502EMS-PBF的Datasheet PDF文件第3页浏览型号LT3502EMS-PBF的Datasheet PDF文件第4页浏览型号LT3502EMS-PBF的Datasheet PDF文件第5页浏览型号LT3502EMS-PBF的Datasheet PDF文件第6页浏览型号LT3502EMS-PBF的Datasheet PDF文件第7页 
LT3502/LT3502A  
1.1MHz/2.2MHz, 500mA  
Step-Down Regulators in  
2mm × 2mm DFN and MS10  
DESCRIPTION  
FEATURES  
The LT®3502/LT3502A are current mode PWM step-down  
DC/DC converters with an internal 500mA power switch,  
in tiny 8-lead 2mm × 2mm DFN and 10-lead MS10  
packages.Thewideinputvoltagerangeof3Vto40Vmakes  
the LT3502/LT3502A suitable for regulating power from a  
wide variety of sources, including 24V industrial supplies  
and automotive batteries. Its high operating frequency  
allows the use of tiny, low cost inductors and capacitors,  
resulting in a very small solution. Constant frequency  
abovetheAMbandavoidsinterferingwithradioreception,  
making the LT3502A particularly suitable for automotive  
applications.  
3V to 40V Input Voltage Range  
500mA Output Current  
Switching Frequency: 2.2MHz (LT3502A),  
1.1MHz (LT3502)  
800mV Feedback Voltage  
Short-Circuit Robust  
Soft-Start  
Low Shutdown Current: <2μA  
Internally Compensated  
Internal Boost Diode  
Thermally Enhanced 2mm × 2mm 8-Lead DFN  
and 10-lead MS10 Package  
Cycle-by-cycle current limit and frequency foldback  
provide protection against shorted outputs. Soft-start  
and frequency foldback eliminates input current surge  
duringstart-up. DAcurrentsenseprovidesfurtherprotec-  
tion in fault conditions. An internal boost diode reduces  
component count.  
APPLICATIONS  
Automotive Systems  
Battery-Powered Equipment  
Wall Transformer Regulation  
Distributed Supply Regulation  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
LT3502A 12VIN Efficiency  
3.3V Step-Down Converter  
90  
80  
BD  
5V  
3.3V  
OUT  
V
OUT  
IN  
V
BOOST  
SW  
IN  
70  
60  
50  
40  
30  
20  
10  
4.7V TO 40V  
1μF  
0.1μF  
6.8μH  
31.6k  
V
OUT  
3.3V  
500mA  
LT3502A  
DA  
FB  
SHDN  
OFF ON  
GND  
10k  
10μF  
3502 TA01a  
0
0
0.4  
0.5  
0.1  
0.2  
0.3  
LOAD CURRENT (A)  
3502 TA01b  
3502fc  
1

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