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The RT9711A/B/C/D are cost-effective, low voltage, single N-MOSFET high-side power switches, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The RT9711 series are equipped with a charge pump circuitry to drive the internal MOSFET switch. The switch's low R<sub>DS(ON)</sub>, 80mΩ, meets USB voltage drop requirements. A flag output is available to indicate fault conditions to the local USB controller.<br />Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, fault current is limited to typically 2.5A for RT9711A/B in dual ports and 1A for RT9711C/D in single port in accordance with the USB power requirements, lower quiescent current as 25μA making this device ideal for portable battery-operated equipment.<br />The RT9711 series are available in SOT-23-5, TSOT-23-5, SOP-8 and MSOP-8 packages fitting different aspect of broad applications.
RT9711A/RT9711B/RT9711C/RT9711D Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Compliant to USB Specifications </li><li>Built-In N-MOSFET♦Typical R<sub>DS(ON)</sub> : 80mΩ (SOT-23-5 & TSOT-23-5) and 90mΩ (SOP-8 & MSOP-8) </li><li>Output Can Be Forced Higher Than Input (Off-State) </li><li>Low Supply Current :♦25μA Typical at Switch On State♦1μA Typical at Switch Off State </li><li>Guaranteed 1.5A for RT9711A/B and 0.6A for RT9711C/D Continuous Load Current </li><li>Wide Input Voltage Ranges : 2.5V to 5.5V </li><li>Open-Drain Fault Flag Output </li><li>Hot Plug-In Application (Soft-Start) </li><li>1.7V Typical Under-Voltage Lockout (UVLO) </li><li>Current Limiting Protection </li><li>Thermal Shutdown Protection </li><li>Reverse Current Flow Blocking (no body diode) </li><li>Smallest SOT-23-5 and TSOT-23-5 Packages Minimizes Board Space </li><li>UL Approved-E219878 </li><li>TUV <em>IEC60950-1 : 2005</em> Certified </li><li>RoHS Compliant and 100% Lead (Pb)-Free </li></ul></div>
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RT9711A/RT9711B/RT9711C/RT9711D Ordering Information
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<div class="spec-list"><ul class="lv1"><li>USB Bus/Self Powered Hubs </li><li>USB Peripherals </li><li>ACPI Power Distribution </li><li>PC Card Hot Swap </li><li>Notebook, Motherboard PCs </li><li>Battery-Powered Equipment </li><li>Hot-Plug Power Supplies </li><li>Battery-Charger Circuits </li></ul></div>
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