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AL8806

Diodes Incorporated
Part Number AL8806
Manufacturer Diodes Incorporated
Description HIGH EFFICIENCY 36V 1.5A BUCK LED DRIVER
Published Sep 25, 2012
Detailed Description NOT RECOMMENDED FOR NEW DESIGN USE AL8860 OR AL8861 AL8806 HIGH EFFICIENCY 36V 1.5A BUCK LED DRIVER Description The A...
Datasheet PDF File AL8806 PDF File

AL8806
AL8806


Overview
NOT RECOMMENDED FOR NEW DESIGN USE AL8860 OR AL8861 AL8806 HIGH EFFICIENCY 36V 1.
5A BUCK LED DRIVER Description The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current.
The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V.
The AL8806 switches at frequencies up to 1MHz.
This allows the use of small size external components, hence minimizing the PCB area needed.
Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins.
Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin.
An input voltage of 0.
4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.
Pin Assignments SET 1 GND 2 GND 3 CTRL 4 8 VIN AL8806 7 6 N/C SW 5 SW MSOP-8EP Features • LED driving current up to 1.
5A • Better than 5% accuracy • High efficiency up to 98% • Operating input voltage from 6V to 36V • High switching frequency up to 1MHz • PWM/DC input for dimming control • Built-in output open-circuit protection • MSOP-8EP: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/ RoHS Compliant • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free.
“Green” Device (Note 3) Applications • High Power MR16 Lamps • General Illumination Lamps • Multi-Die LED Driver Notes: 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" and Lead-free.
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 D2 D3 DFLS230LH D1 RSET 0R089 SET VIN ~ 12VAC DFLS230LH x4 C1 450µF D4 D5 CTRL GND AL8806 SW C...



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