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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

LM3409

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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
PDIP (NFF) 14 158.4268 mm² (19.18 mm × 8.26 mm) HVSSOP (DGQ) 10 14.7 mm² (3 mm × 4.9 mm)
  • 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) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function 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 currents up to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement 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) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function 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 currents up to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement 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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顶层文档 类型 标题 格式选项 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 2016-5-23
技术文章 Dimming in switched-mode LED drivers PDF | HTML 2018-8-13
选择指南 电源管理指南 2018 2018-7-31
白皮书 LED Drivers for Automotive Exterior Applications (Rev. B) 2018-3-27
技术文章 Color the world with what’s next in RGBW LED light source technology – part 2 PDF | HTML 2017-8-16
技术文章 Color the world with what’s next in RGBW LED light source technology – part 1 PDF | HTML 2017-8-3
技术文章 LED brightness adjustment: high-frequency PWM dimming PDF | HTML 2016-8-26
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013-5-3
用户指南 AN-1954 LM3409 Demonstration Board (Rev. D) 2013-5-1
应用手册 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013-4-23
应用手册 Application Note 1953 LM3409HV Evaluation Board (cn) 2009-11-20
应用手册 Application Note 1954 LM3409 Demonstration Board (cn) 2009-11-20
应用手册 Dimming Techniques for Switched-Mode LED Drivers 2009-7-30

设计与开发

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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 (...)

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仿真模型

LM3409 PSpice Transient Model

SNVM064.ZIP (74 KB) - PSpice 模型
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仿真模型

LM3409 TINA-TI Transient Reference Design

SNVM421.TSC (580 KB) - TINA-TI 参考设计
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仿真模型

LM3409 TINA-TI Transient Spice Model

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

LM3409-Q1 PSpice Transient Model

SNVM350.ZIP (69 KB) - PSpice 模型
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参考设计

PMP6024 — 100-240VAC 输入，60W，2 灯串，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数校正恒定输出电压反激式转换器，后跟两个直流/直流降压 LED 电流控制器。  它适用于 3500-5000 流明的室内或者室外照明应用（取决于 LED 选择）。  LED 亮度由 3.3V 10kHz PWM 信号控制，该信号转换为对 LED 灯串电流进行直流电平调整，从而避免对光输出进行 PWM 调制。

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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

此参考设计演示了对单条 RGBW LED 灯串的最佳色彩控制范围，PWM 分辨率超过 16 位，同时支持高达 30kHz 和 50kHz 的 PWM 调制频率。此参考设计演示了对单条 RGBW LED 灯串的最佳色彩控制范围，可助力开发高效的直流-直流 LED 灯具，这些灯具能够生成包含数万亿种颜色的宽广色域，同时不会被高端摄像机和视频广播设备察觉。
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封装 引脚 CAD 符号、封装和 3D 模型
PDIP (NFF) 14 Ultra Librarian
HVSSOP (DGQ) 10 Ultra Librarian
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