Voltage Protection | CMPWR150

500 mA, 3.3 V SmartOR¿ Power Regulator

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The CMPWR150 is a low dropout regulator that delivers up to 500 mA of load current at a fixed 3.3 V output. An internal threshold level (typically 4.1 V) is used to prevent the regulator from being operated below dropout voltage. The device continuously monitors the input supply and will automatically disable the regulator when VVCC falls below the threshold level. When the regulator is disabled, the control signal Drive (Active Low) is enabled, which allows an external PMOS switch to power the load from an auxiliary 3.3 V supply.

  • Dual power systems
  • Systems with standby capabilities

  • Digital TV, Set Top Box, PC/Notebook, Gaming

  • Automatic detection of VVCC input supply
  • Drive output logic to control external switch
  • Glitch-free output during supply transitions

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