The DiodesZetex AL5822 is a 100Hz/120Hz LED current ripple suppressor for LED lighting applications. Combined with a pre-stage APFC LED driver, the AL5822 circuitry can efficiently suppress the low frequency (100Hz/120Hz) LED current ripple from the APFC output, thus eliminate the low frequency flickering for various LED lamps. The AL5822 adopts high efficiency driving mechanism. It can automatically adapt to different LED chains’ voltage and current, to eliminate the LED current ripple, meanwhile minimize the power consumption on the power MOSFET. The AL5822 has built-in protections, such as over-temperature protection (OTP), over-current-protection (OCP) and LED Short-Circuit protection (SCP). The AL5822 is available in the SOT26 package.

High efficiency and support various kinds of APFC pre-stage circuit Simplified external Bill of Materials (BOM) No need for magnetic components Wide output voltage and current range Tuneable LED current ripple ratio and flickering free