ADAPTIVE 100Hz/120Hz LED CURRENT RIPPLE SUPPRESSOR
The 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
The AL5822 is available in the SOT26 package.
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
Built-In LED Short-Circuit Protection (SCP)
Built-In Over-Current Protection (OCP)
Built-In Over-Temperature Protection (OTP)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
General LED Lamps
LED Power Modules
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
APFC LED Driver
GND 2 AL5822 5 VS
Document number: DS41708 Rev. 1 - 2
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