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AL8820SP-13 Datasheet(PDF) 1 Page - Diodes Incorporated |
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AL8820SP-13 Datasheet(HTML) 1 Page - Diodes Incorporated |
1 / 15 page AL8820 Document number: DS37369 Rev. 1 - 2 1 of 15 www.diodes.com December 2014 © Diodes Incorporated AL8820 40V, 2A BOOST/BUCK LED DRIVER Description The AL8820 is a highly integrated high performance LED driver optimized for MR16/AR111 and other similar LED lamp applications. With a proprietary control scheme, the LED driver is compatible with many commonly used electronic transformers and meets High Power Factor (PF) and low Total Harmonic Distortion (THD) requirements for these applications. The device integrates two DC/DC converters. The Two stage design offers superior performance for MR16/AR111 applications. The first stage is a boost PFC stage which improves PF, reduces EMI, powers up the Buck stage and the compatibility of Electronic Transformers. The Buck stage regulates the LED current thru the setting of external sense resistor. The integrated low RDSON of integrated MOSFETs reduce the conduction power loss. A compact thermally efficient SO- 8EP package, the AL8820 provides an ideal solution for MR16/AR111 applications. Features Wide Input Voltage Range: 5V to 36V Internal 40V NDMOS Switch 2A Output Current Continuous Conduction Mode (CCM) Operation Up to 1MHz Switching Frequency High PF > 0.9 and Low THD < 30% and Low Ripple < 20% Internal Protections Under Voltage Lock Out (UVLO) Output Open/Short Protection Over Temperature Protection (OTP) SO-8EP Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Ant imony Free. “Green” Device (Note 3) Pin Assignments (Top View) SO-8EP Applications MR16 Lamps AR111 General Illumination Lamps 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 "Gree n” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit D2 D1 D3 D4 D5 D6 RSET1 RHYS RSET2 R1 R2 C1 C2 C3 SW1 CS1 FB COMP SW2 VCC VIN CS2 (Exposed Pad) L2 L3 C4 C5 VOUT Vac L1 1 2 3 4 8 7 6 5 SW1 CS1 FB COMP SW2 VCC VIN CS2 EP |
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