Description

  The AT6288 is an incorporated 60mΩ 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 (OCB) 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. OCB is open-drain output which is asserted when over-current or over-temperature event occurs. A 10ms 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 AT6288 eliminates any reversed current flow across the switch when it is powered off. 

    The AT6288 are available in SOT23-5, 8-pin MSOP、SOP packages, operates over the extended (-40°C to +85°C) temperature range.

Features

• 60mΩ POWER MOSFET

• Operating Range : 2.7V to 5.5V

• Under Voltage Lockout

• 30μA 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 (OCB)

• Output Shutdown Pull-low Resistor

• Available in SOT23-5、SOP-8 and MSOP-8 Packages

• RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free

Typical Applications Circui