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A4450 Datasheet(PDF) 2 Page - Allegro MicroSystems |
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A4450 Datasheet(HTML) 2 Page - Allegro MicroSystems |
2 / 34 page Buck-Boost Controller with Integrated Buck MOSFET A4450 2 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com SELECTION GUIDE Part Number Temperature Range Packing1 Package Lead Frame A4450KESTR-J –40°C to 150°C 1500 pieces per 7-inch reel 20-pin QFN with thermal pad and wettable flank 100% matte tin 1 Contact Allegro for additional packing options. SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS2 Characteristic Symbol Notes Rating Unit VIN VIN –0.3 to 40 V AVIN VAVIN –0.3 to 40 V EN VEN –0.3 to VIN V LX VLX continuous −0.3 to VIN + 0.3 V t < 250 ns –1.5 V t < 50 ns VIN + 3 V LG VLG –0.3 to 8.5 V BOOT VBOOT VLX – 0.3 to VLX + 6 V All other pins –0.3 to 7.5 V Junction Temperature Range TJ –40 to 150 °C Storage Temperature Range Tstg –55 to 150 °C 2 Stresses beyond those listed in this table may cause permanent damage to the device. The absolute maximum ratings are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics table is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability THERMAL CHARACTERISTICS Characteristic Symbol Test Conditions3 Value Unit Junction to Ambient Thermal Resistance RθJA QFN-20 (ES) package, 4-layer PCB based on JEDEC standard 37 °C/W 3 Additional thermal information available on the Allegro website. |
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