現在提供此產品的更新版本
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LM3406
- LM3406HV-Q1
- Automotive Grade Device
- AEC-Q100 Grade 1 Qualified
- Operating Ambient Temperature: –40°C to 125°C
- Integrated 2.0A MOSFET
- VIN Range 6V to 42V (LM3406)
- VIN Range 6V to 75V (LM3406HV)
- VIN Range 6V to 75V (LM3406HV-Q1)
- True Average Output Current Control
- 1.7A Minimum Output Current Limit Over Temperature
- Cycle-by-Cycle Current Limit
- PWM Dimming with Dedicated Logic Input
- PWM Dimming with Power Input Voltage
- Simple Control Loop Compensation
- Low Power Shutdown
- Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
- Thermal Shutdown Protection
- TSSOP-14 Package
The LM3406 family are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense 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. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage. The product feature set is rounded out with low-power shutdown and thermal shutdown protection.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM3406/06HV 1.5A Constant Current Buck Regulator for Driving High Power LEDs datasheet (Rev. E) | 2014/2/17 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 白皮書 | LED Drivers for Automotive Exterior Applications (Rev. B) | 2018/3/27 | ||||
| 應用說明 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013/5/3 | ||||
| 應用說明 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013/4/23 | ||||
| 應用說明 | Dimming Techniques for Switched-Mode LED Drivers | 2009/7/30 |
設計與開發
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LM3406MHEVAL — 適用於驅動高功率 LED 的 LM3406 - 1.5A 定電流降壓穩壓器評估板
The LM3406 is a buck regulator 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 1.5A. The converter's output voltage adjusts as needed to maintain a constant current through the LED (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 14 | Ultra Librarian |
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