AL8805

HIGH EFFICIENCY 30V 1A BUCK LED DRIVER

AL8805

Document number: DS35030 Rev. 1 - 2

10 of 16

www.diodes.com

September 2010

© Diodes Incorporated

PWM Dimming (cont.)

Typically, for a PWM frequency of 500Hz the accuracy is

better than 1% for PWM ranging from 1% to 100%.

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PWMdimming [%]

Figure 30. PWM Dimming at 500Hz

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PWMdimming [%]

Figure 31. Low duty cycle PWM Dimming at 500Hz