PD-60329 IR3820MPbF TM SupIRBuck HIGHLY INTEGRATED 12A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR Features Description Wide Input Voltage Range 2.5V to 21V TM The IR3820 SupIRBuck is an easy-to-use, fully Wide Output Voltage Range 0.6V to 12V integrated and highly efficient DC/DC regulator. Continuous 12A Load Capability The onboard switching controller and MOSFETs 600kHz High Frequency Operation make the IR3820 a space-efficient solution, Programmable Over-Current Protection providing accurate power delivery for low output Programmable PGood Output voltage applications. Hiccup Current Limit Precision Reference Voltage (0.6V) The IR3820 operates from a single 4.5V to 14V Programmable Soft-Start input supply and generates an output voltage Pre-Bias Start-up adjustable from 0.6V to 0.75*Vin at loads up to Thermal Protection 12A. Thermally Enhanced Package A versatile regulator offering programmability of Small Size 5mmx6mm QFN startup time, power good threshold and current Pb-Free (RoHS Compliant) limit, the IR3820s fixed 600kHz switching Applications frequency allows the use of small external components. Distributed Point-of-Loads Server and Workstations The IR3820 also features important protection Embedded Systems functions, such as Pre-Bias startup, hiccup Storage Systems current limit and thermal shutdown to provide the DDR Applications required system level security in the event of fault Graphics Cards conditions. Game Consoles Computing Peripheral Voltage Regulators Fig. 1. Typical application diagram 11/04/08 1 PD-60329 IR3820MPbF ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) V Supply Voltage -0.3V to 24V IN Vcc Supply Voltage -0.3V to 16V Vc Supply Voltage -0.3V to 30V SW -0.3V to 30V PGood -0.3V to 16V Fb,COMP,SS,Vsns -0.3V to 3.5V OCSet 10mA AGnd to PGnd -0.3V to +0.3V Storage Temperature Range -65C To 150C Operating Junction Temperature Range -40 C To 150C ESD Classification JEDEC, JESD22-A114 o Moisture Sensitivity Level JEDEC Level 3 260 C Caution: Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. PACKAGE INFORMATION 5mm x 6mm POWER QFN 10 11 12 V SW IN PGnd o = 35 C / W JA o = 2 C / W J-PCB 15 HG 9 PGood 13 AGnd V V 14 8 C CC 1 23 4 5 6 7 Vsns FB COMP AGnd AGnd SS OCSet Fig. 2: Package outline (Top view) ORDERING INFORMATION PACKAGE PACKAGE PIN PARTS PER DESIGNATOR COUNT REEL DESCRIPTION M IR3820MTRPbF 15 4000 M IR3820MTR1PbF 15 750 11/04/08 2