产品详细信息

Input voltage (type) AC/DC Topology Buck, Flyback Vin (Min) (V) 8 Vin (Max) (V) 13 Iout (Max) (A) 2 Iq (Typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal Shutdown Operating temperature range (C) -40 to 125 Dimming method Analog
Input voltage (type) AC/DC Topology Buck, Flyback Vin (Min) (V) 8 Vin (Max) (V) 13 Iout (Max) (A) 2 Iq (Typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal Shutdown Operating temperature range (C) -40 to 125 Dimming method Analog
SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGS) 10 9 mm² 3 x 3
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

下载

技术文档

star = 有关此产品的 TI 精选热门文档
未找到结果。请清除搜索,并重试。
查看全部 17
类型 项目标题 下载最新的英语版本 日期
* 数据表 LM3444 AC-DC Offline LED Driver 数据表 (Rev. D) PDF | HTML 31 Dec 2015
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 21 Sep 2020
选择指南 电源管理指南 2018 (Rev. K) 31 Jul 2018
选择指南 电源管理指南 2018 (Rev. R) 25 Jun 2018
技术文章 Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
技术文章 LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
技术文章 Take better selfies with innovative LED flashes 18 Nov 2014
技术文章 Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 03 May 2013
应用手册 AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver (Rev. E) 01 May 2013
用户指南 AN-2083 LM3444 A19 Edison Retrofit Evaluation Board (Rev. C) 01 May 2013
应用手册 AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver (Rev. F) 01 May 2013
更多文献资料 LED 照明 灯泡替代及筒灯照明解决方案 28 Mar 2013
应用手册 An Improved Line Regulation Solution Used in LM3444/5 Non-Isolated LED Lighting 25 Oct 2012
用户指南 LM3444 MR16 Buck-Boost Reference Design (Rev. A) 17 Feb 2012
用户指南 LM3444 MR16 Boost Reference Design User Guide (Rev. A) 13 Feb 2012
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) 18 Oct 2007

设计和开发

如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。

评估板

LM3444-EDSNEV — LM3444 A19 Edison 改良 LED 驱动器(不可调光)评估板

The evaluation board included in this shipment converts 85 VRMS to 135 VRMS input and drives five to thirteen series connected LEDs at the currents listed in the Evaluation Board Operating Conditions section.

This is a two-layer board using the bottom and top layer for component placement. The board (...)

TI.com 無法提供
评估板

LM3444MR16BSTRB — LM3444 升压拓扑 MR16 LED 灯泡参考设计

This reference design was based on the released LM3444 IC. It was developed to minimize the current spikes coming out of an electronic transformer to less than 5A, which is a typical transformer rating, when driving an LED MR16 circuit. The off the shelf LED MR16 solutions exhibit spikes that (...)

TI.com 無法提供
模拟工具

PSPICE-FOR-TI 适用于 TI 设计和模拟工具的 PSpice®

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 (...)
CAD/CAE 符号

LM3444 MR16 Boost Reference Design CAD File LM3444 MR16 Boost Reference Design CAD File

封装 引脚数 下载
SOIC (D) 8 了解详情
VSSOP (DGS) 10 了解详情

订购和质量

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/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

支持与培训

视频