LM3404
- Integrated 1-A MOSFET
- VIN Range 6 V to 42 V (LM3404)
- VIN Range 6 V to 75 V (LM3404HV)
- 1.2-A Output Current Overtemperature
- Cycle-by-Cycle Current Limit
- No Control Loop Compensation Required
- Separate PWM Dimming and Low Power
Shutdown - Supports All-Ceramic Output Capacitors and
Capacitor-lessOutputs - Thermal Shutdown Protection
- SOIC-8 Package, SO PowerPAD™-8 Package
The LM3404 and LM3404HV devices are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, these devices contain a high-side N-channel MOSFET switch with a current limit of 1.5-A (typical) for step-down (Buck) regulators. Hysteretic controlled on-time and an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. Some features are: LED dimming using pulse width modulation (PWM), broken or open LED protection, low-power shutdown, and thermal shutdown.
技术文档
| 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 | LM3404xx 1-A Constant Current Buck Regulator for Driving High Power LEDs 数据表 (Rev. G) | PDF | HTML | 2015-9-29 | ||
| 白皮书 | 常见 LED 功能和 LED 驱动器设计注意事项 | 英语版 | 2020-9-21 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 技术文章 | Color the world with what’s next in RGBW LED light source technology – part 1 | PDF | HTML | 2017-8-3 | |||
| 应用手册 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013-5-3 | ||||
| 应用手册 | Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages (Rev. A) | 2013-5-1 | ||||
| 应用手册 | AN-1853 COT Drivers Control LED Ripple Current (Rev. A) | 2013-5-1 | ||||
| 应用手册 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013-4-23 | ||||
| 用户指南 | LM3404 Driving a Seoul Semi Zpower P4 1A LED User Guide | 2012-1-27 | ||||
| 应用手册 | Application Note 1545 LM3404/LM3404HV Evaluation Board (cn) | 2009-8-14 | ||||
| 应用手册 | LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation Board (cn) | 2008-12-10 |
设计与开发
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LM3404EVAL — LM3404MA（采用 SOIC 封装）- 用于 HB LED 的 1A 恒流降压稳压器（LM3404 评估板）
The LM3404/04HV is a buck regulator derived controlled current source designed to drive a series string of high power, high brightness LEDs (HBLEDs) such as the Luxeon™ K2 Emitter at forward currents of up to 1.0A. The board can accept an input voltage ranging from 6V to 42V when using the LM3404. (...)
LM3404FSTDIMEV — LM3404FSTDIMEV - 快速调光和真正恒流 LED 驱动器评估板
The LM3404/04HV are buck regulator derived controlled current sources designed to drive a series string of high power, high brightness LEDs (HBLEDs) at forward currents of up to 1.0A (LM3404/04HV). This evaluation board demonstrates the enhanced thermal performance, fast dimming and true constant (...)
LM3404MREVAL — LM3402 LM3404 高功耗 PSOP-8 评估板
The LM3402/02HV and LM3404/04HV are buck regulator derived controlled current sources designed to drive a series string of high power, high brightness LEDs (HBLEDs) such as the Luxeon™ K2 Emitter at forward currents of up to 0.5A (LM3402/02HV) or 1.0A (LM3404/04HV). This evaluation board (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
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