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Adjustable Current Limit Power Distribution Switches

  • 62mΩ Power Switch On Resistance
  • Wide Supply Voltage Range : 2.7V to 5.5V
  • Adjustable Current Limit Protection
  • Fast Over current Response : 2us (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
  • TUV IEC/EN62368-1 Certified

General Description
The APL3552 series of power switches integrate a 62mΩ 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 current limit, reverse current protection, and over temperature protection. APL3552 offer an adjustable current-limit threshold between 150mA and 2.8A (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 OCB output asserts low during over current and reverse current conditions. The over-temperature protection limits the junction temperature below 140oC in case of short circuit or over load conditions.

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