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MP2492 Datasheet(PDF) 1 Page - Monolithic Power Systems |
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MP2492 Datasheet(HTML) 1 Page - Monolithic Power Systems |
1 / 11 page MP2492 2A, 55V, 100kHz Step-Down Converter with Programmable Output Current Limit MP2492 Rev. 1.0 www.MonolithicPower.com 1 12/20/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. The Future of Analog IC Technology DESCRIPTION The MP2492 is a monolithic step-down switch mode converter with a programmable output current limit. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. The maximum output current can be programmed by sensing current through the inductor DC resistance (DCR) or an accurate sense resistor. MP2492 achieves low EMI signature with well controlled switching edges. Fault condition protection includes cycle-by-cycle current limiting, and thermal shutdown. The MP2492 requires a minimum number of readily available standard external components. The MP2492 is available in QFN10 (3mm x 3mm) and SOIC8E packages. FEATURES • Wide 4.5V to 55V Operating Input Range • Programmable up to 2A Output Current • Output Adjustable from 0.8V to 15V • Programmable Output Current Limit without power loss • 0.25Ω Internal Power MOSFET Switch • Stable with Low ESR Output Ceramic Capacitors • Fixed 100kHz Frequency • Low EMI signature • Thermal Shutdown • Cycle-by-Cycle Over Current Protection • Available in QFN10 and SOIC8E Packages APPLICATIONS • USB Power Supplies • Automotive Cigarette Lighter Adapters • Power Supply for Linear Chargers “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION , VOUT =5V VIN =12V Efficiency 20 30 40 50 60 70 80 90 100 0.0 0.4 0.8 1.2 1.6 2.0 IOUT (A) |
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