AS6911SGA

Low power external MOS dimmer stabs free DCDC step-down chip

AS6911SGA is a highly integrated step-down constant current LED driver for LED intelligent dimming applications. The chip adopts a quasi-resonant operating mode and integrates accurate inductance current zero crossing detection, which can achieve good EMI performance while working efficiently. AS6911 integrated PWM dimming function, can use PWM to analog dimming can also direct PWM chopper dimming and combination dimming, can achieve a wide dimming range of 0.01~100%.

The AS6911SGA integrates high-precision current sampling technology and accurate current zero crossing detection, combined with internal compensation, can obtain high-precision dimming linearity and consistency. The AS6911SGA integrates complete protection functions to ensure the safe and reliable operation of the system, such as: VDD undervoltage protection (UVLO), LED open circuit protection, LED Short circuit protection, LED-short circuit to ground protection, inductor and diode short circuit protection, CS open circuit and CS short circuit to Drain protection, cycle current limit (OCP), overheat protection (OTP), leading edge blanking (LEB), etc.

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