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Diodes AL8806高效30V降压LED驱动方案

文章出处:8gled.com作者:格烁光电发表时间:2018-07-23
大连代孕-月子频道c3Wc【助孕力量优化生活】

Diodes公司的 AL8806是高效30V/1.5A降压LED驱动器,可驱动多达8个led,工作电压从6V到30V,LED驱动电流达1.5A,效率高达98%,内置输出开路保护,PWM/DC输入调光控制,主要用在大功率MR16灯,通用照明灯和多芯片LED驱动器。本文介绍了AL8806主要特性,交/直流典型应用电路,MR16灯应用电路,AL8806EV3 评估板和材料清单(BOM)。

AL8806: HIGH EFFICIENCY 30V 1.5A BUCK LED DRIVER

The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 30V. The AL8806 switches at frequency up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed.

Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.

AL8806主要特性:

? LED driving current up to 1.5A

? Better than 5% accuracy

? High efficiency up to 98%

代孕费用-【最出色的2018最新技术10SJ】早教频道? Operating input voltage from 6V to 30V

? High switching frequency up to 1MHz

? PWM/DC input for dimming control

? Built-in output open-circuit protection

? SOT25 MSOP8-EP: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/RoHS Compliant

AL8806应用:

? High power MR16 lamps

? General illumination lamps

? Multi-die LED driver



图1。AL8806典型应用电路(1)

图2。AL8806典型应用电路(2)

图3。MR16应用电路


图4。AL8806EV3 评估板外形图(顶视图)

AL8806EV3 评估板材料清单(BOM):


大连代孕-月子频道c3Wc【助孕力量优化生活】 Diodes AL8806高效30V降压LED驱动方案原创编辑请注明出来http://www.yzxinfa.com

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