主页 电源管理 LED 驱动器 照明 LED 驱动器
主页
电源管理
LED 驱动器
照明 LED 驱动器

LM3405

正在供货

用于驱动 LED 的 1.6MHz、1A 恒定电流降压稳压器

立即订购
数据表

LM3405

正在供货
数据表 立即订购

产品详情

Input voltage type DC/DC Topology Buck Vin (min) (V) 3 Vin (max) (V) 15 Vout (max) (V) 13.5 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.8 Features Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 3 Vin (max) (V) 15 Vout (max) (V) 13.5 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.8 Features Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • VIN Operating Range of 3 V to 15 V
  • Drives up to 5 High-Brightness LEDs in Series at 1 A
  • Thin SOT-6 Package
  • 1.6-MHz Switching Frequency
  • EN/DIM Input for Enabling and PWM Dimming of LEDs
  • 300-mΩ NMOS Switch
  • 40-nA Shutdown Current at VIN = 5 V
  • Internally Compensated Current-mode Control
  • Cycle-by-Cycle Current Limit
  • Input Voltage UVLO
  • Overcurrent Protection
  • Thermal Shutdown
  • VIN Operating Range of 3 V to 15 V
  • Drives up to 5 High-Brightness LEDs in Series at 1 A
  • Thin SOT-6 Package
  • 1.6-MHz Switching Frequency
  • EN/DIM Input for Enabling and PWM Dimming of LEDs
  • 300-mΩ NMOS Switch
  • 40-nA Shutdown Current at VIN = 5 V
  • Internally Compensated Current-mode Control
  • Cycle-by-Cycle Current Limit
  • Input Voltage UVLO
  • Overcurrent Protection
  • Thermal Shutdown

The LM3405 is a 1-A constant current buck LED driver designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.205-V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as required for driving various types of LEDs. Switching frequency is internally set to 1.6 MHz, allowing small surface mount inductors and capacitors to be used. The LM3405 uses 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 15 V, the device can drive up to 3 High-Brightness LEDs in series at 1-A forward current, with the single LED forward voltage of approximately 3.7 V. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and overcurrent protection.

The LM3405 is a 1-A constant current buck LED driver designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.205-V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as required for driving various types of LEDs. Switching frequency is internally set to 1.6 MHz, allowing small surface mount inductors and capacitors to be used. The LM3405 uses 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 15 V, the device can drive up to 3 High-Brightness LEDs in series at 1-A forward current, with the single LED forward voltage of approximately 3.7 V. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and overcurrent protection.
open-in-new 查找其他 照明 LED 驱动器
下载 观看带字幕的视频 视频

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相同但引脚有所不同
TPS92513 正在供货 42V 1.5A 模拟电流可调节降压型 LED 驱动器 This product provides both analog dimming and PWM dimming capabilities and it supports up to 1.5 A output current. Input voltage up to 42 V.

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 9
类型 标题 下载最新的英语版本 日期
* 数据表 LM3405 1.6-MHz, 1-A Constant Current Buck Regulator For Powering LEDS 数据表 (Rev. C) PDF | HTML 2016年 12月 23日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
EVM 用户指南 AN-1590 LM3405 Demo Board (Rev. A) 2013年 5月 1日
用户指南 AN-1685 LM3405A Demo Board (Rev. B) 2013年 5月 1日
应用手册 Powering & Dimming High-Brightness LEDs w/ LM3405 Constant-Current Buck Reg (Rev. A) 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
应用手册 Application Note 1685 LM3405A Demo Board (cn) 2007年 10月 19日
应用手册 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 最新英语版本 (Rev.A) 2007年 10月 18日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

LM3405XEVAL — 为 LED 供电的 1.6MHz 1A 恒流降压稳压器

The LM3405 demo board is configured to drive a series string of high power, high brightness LEDs at a forward current of 1A using the LM3405 constant current buck regulator. The board can accept a full input operating range of 3V to 15V. The converter output voltage adjusts as needed to maintain a (...)

用户指南: PDF
TI.com 上无现货
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 (...)
发送申请
封装 引脚 下载
SOT-23-THN (DDC) 6 查看选项
应遵守 TI 评估类商品的标准条款与条件。

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
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

视频