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The RT7272A is a high efficiency, current mode synchronous step-down DC-DC converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The RT7272A integrates a 150mΩ On-Resistance of high-side MOSFET and an 80mΩ On-Resistance of low-side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture supports fast transient response and simple compensation circuit.<br />A cycle-by-cycle current limit function provides protection against shorted output and an internal soft-start eliminates input current surge during start-up. The RT7272A provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and over-temperature protection.<br />The RT7272A is available in the thermal enhanced SOP-8 (Exposed Pad) package.
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<li class="mv5"> 4.5V to 36V Input Voltage Range<br /> </li><li class="mv5"> 3A Output Current<br /> </li><li class="mv5"> Internal N-MOSFETs<br /> </li><li class="mv5"> Current Mode Control<br /> </li><li class="mv5"> Fixed Switching Frequency Operation: 500kHz <br /> </li><li class="mv5"> Adjustable Output Voltage from 0.8V to 30V<br /> </li><li class="mv5"> High Efficiency Up to 95%<br /> </li><li class="mv5"> Stable with Low ESR Ceramic Output Capacitors<br /> </li><li class="mv5"> Cycle-by-Cycle Current Limit<br /> </li><li class="mv5"> Input Undervoltage Lockout<br /> </li><li class="mv5"> Output Undervoltage Protection<br /> </li><li class="mv5"> Over-Temperature Protection<br /> </li><li class="mv5"> Adjustable Current Limit</li>
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<li class="mv5"> Distributed Power Systems<br /> </li><li class="mv5"> Pre-Regulator for Linear Regulators<br /> </li><li class="mv5"> Notebook Computers<br /> </li><li class="mv5"> Point of Load Regulator in Distributed Power System<br /> </li><li class="mv5"> Digital Set-Top Boxes<br /> </li><li class="mv5"> Personal Digital Recorders<br /> </li><li class="mv5"> Broadband Communications<br /> </li><li class="mv5"> Flat Panel TVs and Monitors<br /> </li><li class="mv5"> Vehicle Electronics</li>
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