A Product Line of
PWM BOOST CONT3R0O4L3LER
The AL3022 is a constant 140KHz, voltage mode, external
compensation boost controller. The AL3022 has low feedback voltage
and makes it ideal for low cost LED backlight supplies. The AL3022
can support external PWM dimming and analog dimming.
The AL3022 offers complete system protection with integrated Under
Voltage Lockout, Over Voltage Protection, Over Current Protection,
Output Voltage (VOUT) Short to GND Protection and Over
Temperature Protection circuitry.
To satisfy the limited PCB mounting space requirements, this IC is
available in SO-8 package to save space.
Voltage Mode PWM Controller
Low 0.2V Reference Voltage
Fixed 140KHz Frequency
External PWM Dimming and Analog Dimming
Low Shutdown Current (0.1µA)
Built-in UVLO Function
Built-in VOUT Short to GND Protection
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
LED Display Module
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html 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
Document number: DS36514 Rev. 3 - 2
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