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Download Gen2.1 SupIRBuck™ Integrated Voltage Regulators
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Features • • • • • • • • • • • • • • • Gen2.1 SupIRBuck™ Integrated Voltage Regulators PRESS RELEASE The Gen2.1 SupIRBuck family features IR’s latest advances in control IC, MOSFET and package integration technologies to deliver up to 12A output current in a low profile, thermally enhanced 5x6mm Power QFN package. Capable of handling input voltages as wide as 1.5V to 16V, the new family of integrated voltage regulators is designed to deliver output voltages from 0.7V to 90% of the input voltage with benchmark efficiency over the entire load range and peak efficiency greater than 96%. DATA SHEETS HI-RES GRAPHIC SuPIRBuck™ PAGE Advantages Wide input voltage range (1.5V to 16V with 5V bias) • Small footprint (5x6mm) and low height (0.9mm) Programmable switching frequency up to 1.5MHz • 1% accurate 0.7V reference voltage Programmable hiccup current limit • Programmable soft-start Enhanced pre-bias start up • Thermal Protection Enable pin with voltage monitoring capability • Power GOOD output for Over Voltage and Under Voltage detection • High bandwidth E/A for excellent transient performance Optimized solutions for sequencing (IR3840/1/2/3W) and DDR memory tracking (IR3831/2W) -40C to 125C operating junction temperature Pin compatible with Gen2 SupIRbuck products Lead-free, halogen-free and RoHS compliant The best in class efficiency over entire load range allows energy saving and simple thermal management The common footprint for 2A, 4A, 8A and 12A devices provides design flexibility and allows cut and paste layout. The need for traditional dual stage POL conversion is eliminated which saves energy, size and cost by operating directly from 12Vin. Excellent package thermal properties and low height allows back-side board mounting for additional space savings. The small footprint and high switching frequency allows smaller total solution size and cost. The Gen2.1 family is a full featured, high performance compact solution for server, storage and Netcom applications allowing easy on-board implementation for fast time to market. Gen2.1 Family Improvements • • • • Added Over Voltage Detection (PGOOD window comparator) Shorter dead-time to reduce power loss Reduced SYNC FET RDS(on) maximum value for better current limit accuracy New current options February 2010