EDN

EDN, May 26, 2011

Issue link: http://dc.ee.ubm-us.com/i/43174

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4x5mm Family Shrinks SupIRBuck™ Footprint By 33% Up To 9A SupIRBuck™ 94 92 90 88 86 84 82 80 78 0 1 2 3 IR3853 Specifi cations Part Number IR3853M IR3856M IR3859M IOUT (A) 4 6 9 Reference Design IRDC3853 IRDC3856 IRDC3859 for more information call 1.800.981.8699 or visit us at www.irf.com THE POWER MANAGEMENT LEADER 4 IOUT (A) IR3856 IR3859 Begin your design with IR's online design tool at mypower.irf.com/SupIRBuck 5 6 7 8 9 integrated regulators save energy, space and system cost for your POL design Features Efficiency Comparison VIN - 12V VOUT - 1.8V Frequency-600kHz • Pin compatible solutions for 4A, 6A, and 9A • Best in class effi ciency over entire load range • Fully featured and protected for easy on-board implementation • Wide input voltage range 1.5V to 21V • Integrated controller, bootstrap diode, control FET and Sync FETKY • Programmable frequency up to 1.5MHz • ± 1% accurate 0.7V reference voltage Efficiency (%)

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