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GMT G557A SOP8 power switch

The G557 is an integrated power switch for  self-powered and bus-powered Universal Serial Bus  (USB) applications.

  • Brand:

    GMT
  • Product Details

General Description 

The G557 is an integrated power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. G557A, G557B, G557C are 70mΩ RDS(ON). 

Several Protection features include current limiting with foldback, and thermal shutdown to prevent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or short circuit occurs. A built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. 

OC is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period.


Features 

  • 70mΩ High-Side MOSFET 

    (G557A,G557B,G557C) 

  • Available with 3 Versions of Current Limits with 

    Foldback 

  • Operating Range:2.7V to 5.5V 

  • 1.5mS Typical Rise Time 

  • Fast Overcurrent Response - 3µS (TYPICAL) 

  •  Under voltage Lockout 

  • 100µA Quiescent Supply Current 

  • 1µA Maximum Shutdown Supply Current 

  • Logic Level Enable Pin, Available with 

  • Active-High or Active-Low Version 

  • No Reverse Current when Power Off 

  • Deglitched Open-Drain Over-Current Flag 

    Output ( OC ) 

  • With Output Shutdown Pull-low Resister 

  • SOP-8 ,MSOP-8,TDFN3X3-8 Packages


Applications 

  • High-Side Power Protection Switch 

  • USB Power Management 

  • USB Host and Self-Powered Bubs 

  • USB Bus-Powered Hubs 

  • Hot Plug-In Power Supplies 

  • Battery-Charger Circuits


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