产品详细信息

Input voltage (type) DC/DC Topology Buck Vin (Min) (V) 4.5 Vin (Max) (V) 35 Iout (Max) (A) 1 Iq (Typ) (mA) 1.05 Features Adjustable Switch Frequency, Enable/Shutdown Operating temperature range (C) -40 to 125 Dimming method PWM
Input voltage (type) DC/DC Topology Buck Vin (Min) (V) 4.5 Vin (Max) (V) 35 Iout (Max) (A) 1 Iq (Typ) (mA) 1.05 Features Adjustable Switch Frequency, Enable/Shutdown Operating temperature range (C) -40 to 125 Dimming method PWM
VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Hysteretic Control for Speed and Simplicity
  • Input Operating Range of 4.5V-35V
  • 1.5MHz Maximum Switching Frequency
  • Low 200mV Reference Voltage
  • Programmable Current Limit
  • High speed CMOS Compatible Enable/Dimming
  • Adjustable Hysteresis
  • Input UVLO
  • No output Capacitor Required
  • 8-pin VSSOP Package

All trademarks are the property of their respective owners.

  • Hysteretic Control for Speed and Simplicity
  • Input Operating Range of 4.5V-35V
  • 1.5MHz Maximum Switching Frequency
  • Low 200mV Reference Voltage
  • Programmable Current Limit
  • High speed CMOS Compatible Enable/Dimming
  • Adjustable Hysteresis
  • Input UVLO
  • No output Capacitor Required
  • 8-pin VSSOP Package

All trademarks are the property of their respective owners.

The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A.

For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.

The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A.

For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.

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LM3409 正在供货 用于高功率 LED 驱动器的 42V PFET 降压控制器 This product is a controlled off-time PFET buck controller for high power LED drivers.

技术文档

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类型 标题 下载最新的英文版本 日期
* 数据表 LM3401 Hysteretic PFET Controller for High Power LED Drive 数据表 (Rev. C) 2013年 5月 2日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 下载英文版本 2020年 9月 21日
技术文章 Here's how body electronics and lighting technology are changing the driving experience 2016年 9月 26日
技术文章 LED brightness adjustment: high-frequency PWM dimming 2016年 8月 26日
技术文章 Take better selfies with innovative LED flashes 2014年 11月 18日
技术文章 Solving the automotive EMI issues in new cars with all the screens 2014年 9月 11日
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
用户指南 AN-1657 LM3401 Demo Board (Rev. C) 2013年 5月 1日
应用手册 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
更多文献资料 LED 照明 灯泡替代及筒灯照明解决方案 2013年 3月 28日
用户指南 LM3401 MR16 Reference Design for Non-Dimming & Dimming LED Application Usr Guide 2012年 1月 27日
应用手册 Application Note 1657 LM3401 Demo Board (cn) 2008年 7月 29日
应用手册 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 下载最新的英文版本 (Rev.A) 2007年 10月 18日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

评估板

LM3401-MR16DEMO — 用于不可调光和可调光 LED 应用的 LM3401 MR16 灯泡参考设计

This reference design was based on the released LM3401 evaluation board and associated application note AN-1657. The circuit and BOM was modified to optimize performance in MR16 solutions. A PCB was created that fits into the MR16 cavity. For fast bench set-up, the LM3401 evaluation board can be (...)

现货
数量限制: 2
评估板

LM3401EVAL — 用于高功率 LED 驱动的 LM3401 滞后 PFET 控制器评估模块

现货
数量限制: 2
仿真模型

LM3401 PSpice Transient Model

SNVM694.ZIP (57 KB) - PSpice Model
仿真模型

LM3401 TINA-TI Transient Spice Model

SNVMBE6.ZIP (17 KB) - TINA-TI Spice Model
仿真模型

LM3401 TINA-TI Transient Reference Design

SNVMBE7.TSC (2048 KB) - TINA-TI Reference Design
仿真工具

PSPICE-FOR-TI — PSPICE® for TI design and simulation tool

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。 

在 PSpice for TI 设计和仿真工具中,您可以搜索 TI 器件、了解产品系列、打开测试台并对您的设计进行仿真,从而进一步分析选定的器件。您还可对多个 TI 器件进行联合仿真,以更好地展现您的系统。

除了一个完整的预加载模型库之外,您还可以在 PSPICE-FOR-TI 工具中轻松访问 TI 器件的全新技术资料。在您确认找到适合您应用的器件后,可访问 TI store 购买产品。 

借助 PSpice for TI,您可使用合适的工具来满足您在整个设计周期(从电路探索到设计开发和验证)的仿真需求。免费获取、轻松入门。立即下载 PSpice 设计和仿真套件,开始您的设计。

入门

  1. 申请使用 PSPICE-FOR-TI 仿真器
  2. 下载并安装
  3. 观看有关仿真入门的培训
计算工具

LED-CIE1931-COLOR-CALCULATOR — 根据功率频谱准确绘制 LED 颜色 - 文章资源

Excel spreadsheet outlining LED color calculations performed in the article Accurately Plot LED Colour from a Power Spectrum by Donald Schelle. Includes calculations to plot LED color on a CIE 1931 xyY chart from its LED power spectrum.
计算工具

LM3401DESIGN-CALC — LM3401 组件计算器

封装 引脚 下载
VSSOP (DGK) 8 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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