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XC8109 - High Function Power Switch

General Description

The XC8109 series is a P-channel MOSFET power switch IC with a low ON resistance.

A current limit, reverse current prevention (prevents reverse current from VOUT to VIN), soft start, thermal shutdown, and an under-voltage lockout (UVLO) are incorporated as protective functions.

Key Features

  • Input Voltage Maximum Output Current ON Resistance Supply Current Stand-by Current Flag Delay Time Protection Circuit Functions Current Limit Response Time Operating Ambient Temperature Package Environmentally Friendly : 2.5V ~ 5.5V : 0.9A : 85mΩ@VIN=5.0V (TYP. ) : 40μA@ VIN=5.0V : 0.1μA (TYP. ) : 7.5ms (TYP. ).
  • At over-current detection : 4ms (TYP. ).
  • At reverse voltage detection : Reverse Current Prevention 75mA ~ 1.3A (TYP. ) Thermal Shutdown Under Voltage Lockout (UVLO) Soft-start : Fl.

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Full PDF Text Transcription (Reference)

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XC8109 Series 85mΩ High Function Power Switch ETR33004-004d ■GENERAL DESCRIPTION The XC8109 series is a P-channel MOSFET power switch IC with a low ON resistance. A current limit, reverse current prevention (prevents reverse current from VOUT to VIN), soft start, thermal shutdown, and an under-voltage lockout (UVLO) are incorporated as protective functions. A flag function monitors the power switch status. The flag output has N-channel open drain structure, and outputs Low level signal while over-current or overheating is detected, or while the reverse current prevention is operated. A variable current limiting function is integrated, allowing the current limit value to be set, using an external resistor. The voltage level which is fed to CE pin determines the status of XC8109.