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LM3405AXMY

更新时间： 2024-09-29 12:09:43
品牌 Logo 应用领域
德州仪器 - TI 驱动器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
32页 1417K
描述
LM3405A 1.6MHz, 1A Constant Current Buck LED Driver with Internal ensation in Tiny SOT and VSSOP PowerPAD Packages

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中文翻译

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LM3405AXMY 技术参数

生命周期：Obsolete零件包装代码：MSOP
包装说明：HTSSOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.68
Samacsys Confidence：Samacsys Status：Released
Samacsys PartID：589035Samacsys Pin Count：9
Samacsys Part Category：Integrated CircuitSamacsys Package Category：Other
Samacsys Footprint Name：SOP65P490X110-9NSamacsys Released Date：2017-01-11 19:09:53
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：22 V最小输入电压：3 V
标称输入电压：5 VJESD-30 代码：S-PDSO-G8
长度：3 mm功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：2.8 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
座面最大高度：1.09 mm表面贴装：YES
切换器配置：BUCK最大切换频率：1900 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：3 mmBase Number Matches：1

LM3405AXMY 数据手册

 浏览型号LM3405AXMY的Datasheet PDF文件第2页浏览型号LM3405AXMY的Datasheet PDF文件第3页浏览型号LM3405AXMY的Datasheet PDF文件第4页浏览型号LM3405AXMY的Datasheet PDF文件第5页浏览型号LM3405AXMY的Datasheet PDF文件第6页浏览型号LM3405AXMY的Datasheet PDF文件第7页 
LM3405A  
www.ti.com  
SNVS508C –OCTOBER 2007–REVISED MAY 2013  
LM3405A 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation in  
Tiny SOT and VSSOP PowerPAD Packages  
Check for Samples: LM3405A  
1
FEATURES  
DESCRIPTION  
The LM3405A is a 1A constant current buck LED  
driver designed to provide a simple, high efficiency  
solution for driving high power LEDs. With a 0.205V  
reference voltage feedback control to minimize power  
dissipation, an external resistor sets the current as  
needed for driving various types of LEDs. Switching  
frequency is internally set to 1.6MHz, allowing small  
surface mount inductors and capacitors to be used.  
The LM3405A utilizes current-mode control and  
internal compensation offering ease of use and  
predictable, high performance regulation over a wide  
range of operating conditions. With a maximum input  
voltage of 22V, it can drive up to 5 High-Brightness  
LEDs in series at 1A forward current, with the single  
LED forward voltage of approximately 3.7V.  
Additional features include user accessible EN/DIM  
pin for enabling and PWM dimming of LEDs, thermal  
shutdown, cycle-by-cycle current limit and over-  
current protection.  
2
•
VIN Operating Range of 3V to 22V  
•
Drives up to 5 High-Brightness LEDs in Series  
at 1A  
•
Thin SOT-6 package and VSSOP-8 PowerPAD  
Packages  
•
•
1.6MHz Switching Frequency  
EN/DIM Input for Enabling and PWM Dimming  
of LEDs  
•
•
•
•
•
•
•
300mΩ NMOS Switch  
40nA Shutdown Current at VIN = 5V  
Internally Compensated Current-mode Control  
Cycle-by-cycle Current Limit  
Input Voltage UVLO  
Over-current Protection  
Thermal Shutdown  
APPLICATIONS  
•
•
•
•
•
LED Driver  
Constant Current Source  
Industrial Lighting  
LED Flashlights  
LED Lightbulbs  
TYPICAL APPLICATION CIRCUIT  
Efficiency vs LED Current (VIN = 12V)  
D3  
D2  
BOOST  
SW  
V
V
IN  
IN  
C3  
D1  
C1  
L1  
V
OUT  
LM3405A  
ON  
I
F
C2  
C4  
EN/DIM  
OFF  
FB  
GND  
R1  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2013, Texas Instruments Incorporated  
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