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How does the PWM dimming function work?

The controller chip has a multi-stage shutdown:

On : Open or 0V < Vr < 0.6V

minimum quiescent current - all circuits shut down - slowest restart response time

Off (Standby) : 0.6V < Vr < 2.9V

output power stage and PWM oscillator off - medium restart response time

Off (Shutdown) : 2.9V < Vr < 6V

output power stage off, all other circuits active - quickest restart response time

 

Kategorie: RCD-24, constant current, dimming, pwm, digital