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A6281EESTR-T Datasheet(PDF) 2 Page - Allegro MicroSystems |
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A6281EESTR-T Datasheet(HTML) 2 Page - Allegro MicroSystems |
2 / 11 page 3-Channel Constant Current LED Driver with Programmable PWM Control A6281 2 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com bus, thus eliminating the need for a separate chip supply bus or an external regulator. Applications include: ▪ Colored, large-character LED signs ▪ Scrolling, colored marquees ▪ Architectural lighting ▪ High intensity monochrome displays ▪ Large video and graphic displays The A6281 is supplied in a 3 mm × 3 mm 16-terminal QFN (suffix ‘ES’) package, with 0.75 mm nominal overall height. The package is lead (Pb) free with 100% matte-tin leadframe plating. Part Number Packing* Mounting A6281EESTR-T 1500 pieces/reel 16 terminal QFN *Contact Allegro for additional packing options. Selection Guide Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Load Supply Voltage VIN 17 V Output Voltage VOUT OUT0, OUT1, OUT2 –0.5 to 17 V Output Current IOUT 170 mA Ground Current IGND 600 mA VREG Pin VREG 6V Logic Outputs VO CO, LO, OEO, SDO 7 V Logic Input Voltage Range VI CI, LI, OEI, SDI –0.3 to 7 V Operating Ambient Temperature TA Range E –40 to 85 ºC Maximum Junction Temperature TJ(max) 150 ºC Storage Temperature Tstg –55 to 150 ºC Description (continued) Thermal Characteristics Characteristic Symbol Test Conditions* Rating Units Package Thermal Resistance RθJA 4-layer PCB based on JEDEC standard 47 ºC/W *For additional information, refer to the Allegro website. 25 50 75 100 125 150 Temperature (°C) 4500 4000 3500 3000 2500 2000 1500 1000 500 0 (R JA = 47 ºC/W) 4 layer PCB Power Dissipation versus Ambient Temperature |
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