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LM3405XMK PDF预览

LM3405XMK

更新时间: 2024-09-29 03:04:51
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关光电二极管PC
页数 文件大小 规格书
20页 482K
描述
1.6MHz, 1A Constant Current Buck Regulator for Powering LEDs

LM3405XMK 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:TSOP-6Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15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:15 V最小输入电压:2.51 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G6
JESD-609代码:e0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:Tin/Lead (Sn/Pb)
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

LM3405XMK 数据手册

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February 2007  
LM3405  
1.6MHz, 1A Constant Current Buck Regulator for Powering  
LEDs  
General Description  
Features  
Integrated with a 1A power switch, the LM3405 is a current-  
mode control switching buck regulator 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 frequen-  
cy is internally set to 1.6MHz, allowing small surface mount  
inductors and capacitors to be used. The LM3405 utilizes  
current-mode control and internal compensation offering  
ease of use and predictable, high performance regulation  
over a wide range of operating conditions. 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 15V  
Thin SOT23-6 package  
1.6MHz switching frequency  
300mNMOS switch  
40nA shutdown current at VIN = 5V  
EN/DIM input for enabling and PWM dimming of LEDs  
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  
Typical Application Circuit  
Efficiency vs LED Current (VIN = 5V)  
20178901  
20178971  
© 2007 National Semiconductor Corporation  
201789  
www.national.com  

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