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发布者:来自网络 发布时间:2014/7/23 阅读:6121次    关键字: DC-DC
EUP3545A-USB Power-Distribution Switch


EUP3545A-USB Power-Distribution Switch with Fault Blanking DataSheet

DESCRIPTION

      The EUP3545A is an incorporated 100m_ P-channel MOSFET power-distribution switch for self-powered and bus-powered Universal Serial Bus (USB) applications.
      When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to safe level by switching into a constant-current limit mode with fold back, pulling the over-current (OC) logic output low. When continuous heavy overloads or short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shutdown the switch to prevent damage. Internal Under Voltage Lock-Out (UVLO) circuitry ensures that the switch remains off until valid input voltage is present.
OC is open-drain output which is asserted when over-current or over-temperature event occurs. A 8ms fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot-swapping a capacitive load, preventing false alarms to the host system. The EUP3545A eliminates any reversed current flow across the switch when it is powered off.
      The EUP3545A are available in SOT23-5, 8-pin MSOP and 8-pin MSOP(EP) packages, operates over the extended (-40°C to +85°C) temperature range.

FEATURES

•  100mΩ_ POWER MOSFET      
•  Operating Range : 2.7V to 5.5V  
•  Under Voltage Lockout
•  11μA Quiescent Current
•  1μA Shutdown Current
•  Logic Level Enable Pin, Available with Active-Low or Active-High Version
•  No Reverse Current when Power Off
•  Fault Blanking Open-Drain Over-Current Flag Output (OC)
•  Output Shutdown Pull-low Resistor
•  Available in SOT23-5,MSOP-8 and MSOP-8 (EP) Packages
•  RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free
•  UL Listed-File No. E334299

APPLICATIONS

•  USB Ports and Self-Powered Hubs
•  USB Bus-Powered Hubs
•  Hot Plug-In Power Supplies
•  General Purpose High Side Switch Applications

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