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LM3409

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用于高功率 LED 驱动器的 42V PFET 降压控制器

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TPS922055 正在供货 具有电感式快速调光和展频功能的 65V、4A 降压 LED 驱动器 New device with inductive fast dimming and spread spectrum

产品详情

Input voltage type DC/DC Topology Buck Vin (min) (V) 6 Vin (max) (V) 42 Vout (max) (V) 42 Vout (min) (V) 1.24 Iout (max) (A) 5 Iq (typ) (mA) 2 Features Adjustable Switch Frequency, Enable/Shutdown, Precision Dimming Control, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 6 Vin (max) (V) 42 Vout (max) (V) 42 Vout (min) (V) 1.24 Iout (max) (A) 5 Iq (typ) (mA) 2 Features Adjustable Switch Frequency, Enable/Shutdown, Precision Dimming Control, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9 PDIP (NFF) 14 158.4268 mm² 19.18 x 8.26
  • LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
  • 2-Ω, 1-A Peak MOSFET Gate Drive
  • VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
  • VIN Range: 6 V to 75 V (LM3409HV, LM3409HV-Q1)
  • Differential, High-Side Current Sense
  • Cycle-by-Cycle Current Limit
  • No Control Loop Compensation Required
  • 10,000:1 PWM Dimming Range
  • 250:1 Analog Dimming Range
  • Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
  • Low-Power Shutdown and Thermal Shutdown
  • Thermally Enhanced 10-Pin, HVSSOP Package
  • LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
  • 2-Ω, 1-A Peak MOSFET Gate Drive
  • VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
  • VIN Range: 6 V to 75 V (LM3409HV, LM3409HV-Q1)
  • Differential, High-Side Current Sense
  • Cycle-by-Cycle Current Limit
  • No Control Loop Compensation Required
  • 10,000:1 PWM Dimming Range
  • 250:1 Analog Dimming Range
  • Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
  • Low-Power Shutdown and Thermal Shutdown
  • Thermally Enhanced 10-Pin, HVSSOP Package

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllersfor step-down (buck) current regulators. They offer wide input voltage range, high-sidedifferential current sense with low adjustable threshold voltage and fast output enable/disablefunction and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currentsup to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constantcurrent without the need for external control loop compensation. Analog and PWM dimming are easy toimplement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllersfor step-down (buck) current regulators. They offer wide input voltage range, high-sidedifferential current sense with low adjustable threshold voltage and fast output enable/disablefunction and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currentsup to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constantcurrent without the need for external control loop compensation. Analog and PWM dimming are easy toimplement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.

For all available packages, see the orderable addendum at the end of the data sheet.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers 数据表 (Rev. L) PDF | HTML 2016年 5月 23日
技术文章 Dimming in switched-mode LED drivers PDF | HTML 2018年 8月 13日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
白皮书 LED Drivers for Automotive Exterior Applications (Rev. B) 2018年 3月 27日
技术文章 Color the world with what’s next in RGBW LED light source technology – part 2 PDF | HTML 2017年 8月 16日
技术文章 Color the world with what’s next in RGBW LED light source technology – part 1 PDF | HTML 2017年 8月 3日
技术文章 LED brightness adjustment: high-frequency PWM dimming PDF | HTML 2016年 8月 26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-1953 LM3409HV Evaluation Board (Rev. D) 2013年 5月 1日
用户指南 AN-1954 LM3409 Demonstration Board (Rev. D) 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 1954 LM3409 Demonstration Board (cn) 2009年 11月 20日
应用手册 Application Note 1953 LM3409HV Evaluation Board (cn) 2009年 11月 20日
应用手册 Dimming Techniques for Switched-Mode LED Drivers 2009年 7月 30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

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评估板

LM3409EVAL — LM3409 演示板

This demonstration board showcases the LM3409 PFET controller for a buck current regulator. It is designed to drive 4 LEDs (VO = 15V) at a maximum average LED current (ILED = 1A) from a DC input voltage (VIN = 24V). The switching frequency (fSW = 525 kHz) is targeted for the nominal operating (...)

用户指南: PDF
TI.com 上无现货
仿真模型

LM3409 PSpice Transient Model

SNVM064.ZIP (74 KB) - PSpice Model
仿真模型

LM3409 TINA-TI Transient Reference Design

SNVM421.TSC (580 KB) - TINA-TI Reference Design
仿真模型

LM3409 TINA-TI Transient Spice Model

SNVM420.ZIP (14 KB) - TINA-TI Spice Model
仿真模型

LM3409-Q1 PSpice Transient Model

SNVM350.ZIP (69 KB) - PSpice Model
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 (...)
参考设计

TIDA-01415 — 100W、高分辨率、16 位颜色可调、0.15% 可调光 RGBW LED 灯具参考设计

This reference design demonstrates the finest range of color control of individual RGBW LED strings with > 16 bits of PWM resolution while supporting the PWM modulation frequencies as high as 30 and 50 kHz. This reference design demonstrates the finest range of individual RGBW LED strings color (...)
设计指南: PDF
原理图: PDF
参考设计

PMP6024 — 100-240VAC 输入、60W、双串 PWM 可调光 LED 驱动器参考设计

PMP6024 是一种离线 LED 驱动器电路,包含一个隔离式功率因素校正恒定输出电压反激式转换器,随后是两个直流/直流降压 LED 电流控制器。它适用于 3500-5000 流明(取决于 LED 选择)的室内或室外区域照明应用。LED 亮度由 3.3V 10kHz PWM 信号控制,此信号转换为 LED 灯串电流的直流电平调整值,从而避免对光输出进行 PWM 调制。
测试报告: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HVSSOP (DGQ) 10 Ultra Librarian
PDIP (NFF) 14 Ultra Librarian

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

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