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IR3822MPBF Datasheet(PDF) 1 Page - International Rectifier |
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IR3822MPBF Datasheet(HTML) 1 Page - International Rectifier |
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1 / 21 page  01/08/08 1 PD-60333 IR3822MPBF HIGHLY INTEGRATED 4A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR Features • Wide Input Voltage Range 2.5V to 21V • Wide Output Voltage Range 0.6V to 12V • Continuous 4A Load Capability • 600kHz High Frequency Operation • Programmable Over-Current Protection • Programmable PGood Output • Hiccup Current Limit • Precision Reference Voltage (0.6V) • Programmable Soft-Start • Pre-Bias Start-up • Thermal Protection • Thermally Enhanced Package • Small Size 5mmx6mm QFN • Pb-Free (RoHS Compliant) Fig. 1. Typical application diagram Description The IR3822 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard switching controller and MOSFETs make the IR3822 a space-efficient solution, providing accurate power delivery for low output voltage applications. The IR3822 operates from a single 4.5V to 14V input supply and generates an output voltage adjustable from 0.6V to 0.75*Vin at loads up to 4A. A versatile regulator offering programmability of startup time, power good threshold and current limit, the IR3822’s fixed 600kHz switching frequency allows the use of small external components. The IR3822 also features important protection functions, such as Pre-Bias startup, hiccup current limit and thermal shutdown to provide the required system level security in the event of fault conditions. Applications • Distributed Point-of-Loads • Server and Workstations • Embedded Systems • Storage Systems • DDR Applications • Graphics Cards • Game Consoles • Computing Peripheral Voltage Regulators SupIRBuckTM |
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