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PCDC1008-R215EMO Datasheet(PDF) 1 Page - International Rectifier |
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PCDC1008-R215EMO Datasheet(HTML) 1 Page - International Rectifier |
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1 / 51 page  25A Highly Integrated SupIRBuck TM Single-Input Voltage, Synchronous Buck Regulator IR3447 1 www.irf.com © 2013 International Rectifier July 17, 2013 FEATURES Single 5V to 21V application Wide Input Voltage Range from 1.5V to 21V with external Vcc Output Voltage Range: 0.6V to 0.86*PVin 0.5% accurate Reference Voltage Enhanced line/load regulation with Feed-Forward Programmable Switching Frequency up to 1.5MHz Internal Digital Soft-Start Enable input with Voltage Monitoring Capability Remote Sense Amplifier with True Differential Voltage Sensing Thermally compensated current limit and Hiccup Mode Over Current Protection Smart LDO to enhance efficiency External synchronization with Smooth Clocking Dedicated output voltage sensing for power good indication and overvoltage protection which remains active even when Enable is low. Enhanced Pre-Bias Start up Body Braking to improve transient Integrated MOSFET drivers and Bootstrap diode Thermal Shut Down Post Package trimmed rising edge dead-time Programmable Power Good Output Small Size 5mm x 6mm PQFN Operating Junction Temp: -40oC<Tj<125oC Lead-free, Halogen-free and RoHS Compliant DESCRIPTION The IR3447 SupIRBuck TM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3447 a space-efficient solution, providing accurate power delivery for low output voltage and high current applications. IR3447 is a versatile regulator which offers programmability of switching frequency and current limit while operating in wide input and output voltage range. The switching frequency is programmable from 300 kHz to 1.5MHz for an optimum solution. It also features important protection functions, such as Over Voltage Protection (OVP), Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions. APPLICATIONS Server Application Distributed Point of Load Power Architectures Set Top Box Application Power Supplies ORDERING INFORMATION Base Part Number Package Type Standard Pack Orderable Part Number Form Quantity IR3447 PQFN 5mm x 6mm Tape and Reel 750 IR3447MTR1PBF IR3447 PQFN 5mm x 6mm Tape and Reel 4000 IR3447MTRPBF |
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