LM3414
- Supports LED Power up to 60 W(1): 18x 3-W
HBLEDs - RequiresNo External Current Sensing Resistor
- ±3% LED Current Accuracy
- Up to 96% Efficiency
- High Contrast Ratio (Minimum Dimming Current
Pulse Width <10 µS) - Integrated Low-Side N-Channel MOSFET
- Adjustable Constant LED Current From 350 mA to
1000 mA - Support Analog Dimming and Thermal Fold-Back
- Wide Input Voltage Range:
- 4.5 V to 42 V (LM3414)
- 4.5 V to 65 V (LM3414HV)
- Constant Switching Frequency Adjustable from
250 kHz to 1000 kHz - Thermal Shutdown Protection
- Power Enhanced SOIC-8 or 3 mm × 3 mm
WSON-8 Package
The LM3414 and LM3414HV are 1-A 60-W(1) common anode-capable constant current buck LED drivers. They are suitable for driving single string of 3-W HBLED with up to 96% efficiency. They accept input voltages from 4.5 VDC to 65 VDC and deliver up to 1-A average LED current with ±3% accuracy. The integrated low-side N-channel power MOSFET and current sensing element realize simple and low component count circuitry, as no bootstrapping capacitor and external current-sensing resistor are required. An external small-signal resistor to ground provides very fine LED current adjustment, analog dimming, and thermal fold-back functions.
Constant switching frequency operation eases EMI. No external loop compensation network is needed. The proprietary Pulse-Level-Modulation (PLM) control method benefits in high conversion efficiency and true average LED current regulation. Fast response time realizes fine LED current pulse fulfilling the 240 Hz 256-step dimming resolution requirement for general lighting.
The LM3414 and LM3414HV are available in SOIC-8 and 3 mm × 3 mm WSON-8 packages.
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 | LM3414/HV 1-A, 60-W Common Anode-Capable Constant Current Buck LED Driver Requires No External Current Sensing Resistor datasheet (Rev. F) | PDF | HTML | 2015/12/3 | ||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 技術文章 | Color the world with what’s next in RGBW LED light source technology – part 1 | PDF | HTML | 2017/8/3 | |||
| 應用說明 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013/5/3 |
設計與開發
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The LM3414HV is a 65V floating buck LED driver that designed to drive up to 18 pieces of serial High Brightness LEDs (HBLEDs) with up to 1000 mA LED forward current. With the incorporation of the proprietary Pulse-Level-Modulation (PLM) technology, the LM3414HV requires no external current sensing (...)
LM3414HVSDEVAL — LM3414 LM3414HV 1A 65V LED 驅動器 LLP-8 評估板
The LM3414HV is a 65V floating buck LED driver that designed to drive up to 18 pieces of serial High Brightness LEDs (HBLEDs) with up to 1000 mA LED forward current. With the incorporation of the proprietary Pulse-Level-Modulation (PLM) technology, the LM3414HV requires no external current sensing (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (NGQ) | 8 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。