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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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IR3831MPBF 데이터시트(PDF) 1 Page - International Rectifier |
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IR3831MPBF 데이터시트(HTML) 1 Page - International Rectifier |
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1 / 31 page  11/05/10 1 IR3831MPbF Features • Wide Input Voltage Range 1.0V to 16V • Wide Output Voltage Range 0.6V to 0.9*Vin • Continuous 8A Load Capability • Integrated Bootstrap-diode • High Bandwidth E/A for excellent transient performance • Programmable Switching Frequency up to 1.5 MHz • Programmable Over Current Protection (Hiccup) • PGood output • Programmable Soft-Start • Enable Input with Voltage Monitoring Capability • Enhanced Pre-Bias Start-up • Vp input for DDR Tracking applications • -40oC to 125oC operating junction temperature • Thermal Protection • 5mm x 6mm Power QFN Package, 0.9 mm height • Lead-free, halogen-free and RoHS compliant Applications • Server Applications • Storage Applications • Embedded Telecom Systems • Distributed Point of Load Power Architectures • Netcom Applications Fig. 1. Typical application diagram HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS SupIRBuckTM Boot Vcc Fb Comp Gnd PGnd SW OCSet SS/ SD 4.5V <Vcc<5.5V Vo PGood PGood Enable Rt 1.0V <Vin<16V Vin Vp VDDQ Description The IR3831 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The MOSFETS co-packaged with the on-chip PWM controller make IR3831 a space-efficient solution, providing accurate power delivery for DDR memory applications. IR3831 is configured to generate termination voltage (VTT) for DDR memory applications. IR3831 offers programmability of start up time, switching frequency and current limit while operating in wide input and output voltage range. The switching frequency is programmable from 250kHz to 1.5MHz for an optimum solution. It also features important protection functions, such as Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions. PD60363 |
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