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Current Limit Power Distribution Switches

  • 50mΩ Power Switch On Resistance
  • Wide Supply Voltage Range : 2.7V to 5.5V
  • Fix Current Limit Protection
  • Fast Over current Response : 2µs (typ.)
  • Over-Temperature Protection
  • Fault Indication Output
  • Reverse Input-Output Voltage Protection : 25mV (typ.)
  • Enable Input
  • Built-in Soft-Start
  • UL Approved-File No. E328191
  • UL-CB Scheme IEC/EN62368-1 Certified, No. DK83116-UL
  • TUV IEC/EN62368-1 Certified, No. 44 780 19 406748-003

General Description
The APL3556EF series of power switches integrate a 50mΩ N-channel MOSFET power switch, an enable input pin, a fault flag and some protection functions into a single package. The protection features include adjustable/fix current limit, reverse current protection, and over temperature protection. APL3556EF offer an adjustable current-limit threshold between 3.6A (typ.) via an external resistor. The reverse current protection disable the power switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during over current and reverse current conditions. The over-temperature protection limits the junction temperature below 150oC in case of short circuit or over load conditions.

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