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LM3405AXMKE/NOPB

更新时间： 2024-09-29 20:02:11
品牌 Logo 应用领域
美国国家半导体 - NSC 开关光电二极管
页数 文件大小 规格书
20页 418K
描述
IC 2.8 A SWITCHING REGULATOR, 1900 kHz SWITCHING FREQ-MAX, PDSO6, LEAD FREE, TSOT-23, 6 PIN, Switching Regulator or Controller

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LM3405AXMKE/NOPB 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：VSSOP,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16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：12 VJESD-30 代码：R-PDSO-G6
JESD-609代码：e3长度：2.97 mm
湿度敏感等级：1功能数量：1
端子数量：6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：VSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1 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端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：1.65 mmBase Number Matches：1

LM3405AXMKE/NOPB 数据手册

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October 23, 2008  
LM3405A  
1.6MHz, 1A Constant Current Buck LED Driver with Internal  
Compensation in Tiny SOT23 and eMSOP Package  
General Description  
Features  
The LM3405A is a 1A constant current buck LED driver de-  
signed 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 compen-  
sation 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.  
VIN operating range of 3V to 22V  
■
■
■
■
Drives up to 5 High-Brightness LEDs in series at 1A  
Thin SOT23-6 package & eMSOP8 with exposed DAP  
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)  
30015201  
30015273  
© 2008 National Semiconductor Corporation  
300152  
www.national.com  
1234567...20

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 		1.6-MHz, 1-A constant current buck LED driver with internal compensation 8-HVSSOP
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 		1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation in Tiny SOT23 and e
LM3405AXMYX/NOPB TI

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 		具有内部补偿功能的 1.6MHz、1A 恒流降压型 LED 驱动器 | DGN | 8

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