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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 RDS(ON), 80mΩ, meets USB voltage drop requirements. A flag output is available to indicate fault conditions to the local USB controller.
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.
The RT9711 series are available in SOT-23-5, TSOT-23-5, SOP-8 and MSOP-8 packages fitting different aspect of broad applications.
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  • Compliant to USB Specifications
  • Built-In N-MOSFET
      ♦ Typical RDS(ON) : 80mΩ (SOT-23-5 & TSOT-23-5) and 90mΩ (SOP-8 & MSOP-8)
  • Output Can Be Forced Higher Than Input (Off-State)
  • Low Supply Current :
      ♦ 25μA Typical at Switch On State
      ♦ 1μA Typical at Switch Off State
  • Guaranteed 1.5A for RT9711A/B and 0.6A for RT9711C/D Continuous Load Current
  • Wide Input Voltage Ranges : 2.5V to 5.5V
  • Open-Drain Fault Flag Output
  • Hot Plug-In Application (Soft-Start)
  • 1.7V Typical Under-Voltage Lockout (UVLO)
  • Current Limiting Protection
  • Thermal Shutdown Protection
  • Reverse Current Flow Blocking (no body diode)
  • Smallest SOT-23-5 and TSOT-23-5 Packages Minimizes Board Space
  • UL Approved-E219878
  • TUV IEC60950-1 : 2005 Certified
  • RoHS Compliant and 100% Lead (Pb)-Free
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USB Bus/Self Powered Hubs<br />USB Peripherals<br />ACPI Power Distribution<br />PC Card Hot Swap<br />Notebook, Motherboard PCs<br />Battery-Powered Equipment<br />Hot-Plug Power Supplies<br />Battery-Charger Circuits
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