产品概述
The LM3414HVMR/NOPB is a common anode capable Constant Current Buck LED Driver suitable to drive single string of 3W HBLED with up to 96% efficiency. They accept input voltages from 4.5VDC to 65VDC and deliver up to 1A 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, analogue dimming as well as 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 240Hz 256-step dimming resolution requirement for general lighting.
- Requires no external current sensing resistor
- ±3% LED current accuracy
- Up to 96% efficiency
- Integrated low-side n-channel MOSFET
- Support analogue dimming and thermal fold-back
- Thermal shutdown protection
- Green product and no Sb/Br
应用
电源管理, 车用, 发光二极管照明
产品信息
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- 降压, 恒流
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- 4.5V
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- 65V
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- 65V
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- 1A
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- 1MHz
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- 1输出
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- 表面安装
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- SO PowerPAD
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- 8引脚
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- -40°C
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- 125°C
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- -
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- -
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- MSL 3 - 168小时