离线式TRIAC调光LED驱动器参考设计

2.0 Design DescripTIon

This reference design converts 90 V AC to 135 V AC input, and

drives seven, or eight series connected LED’s from 300 to

600 mA average current.. The LM3445 switching frequency

is set at a nominal 225 kHz. This is a four layer board using

the bottom and top layer for component placement. The reference

design can be modified to adjust the LED forward

current, the number of series connected LEDs and switching

frequency. Refer to the LM3445 datasheet for detailed instrucTIons.