XC8108 Series ETR33004-007 85m High Function Power Switch GENERAL DESCRIPTION The XC8108 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 incor porated 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 XC8108. The logic level of CE pin is selectable between either one of active high or active low. APPLICATIONS FEATURES Input Voltage : 2.5V5.5V Set Top Boxes Maximum Output Current : 2A Digital TVs ON Resistance : 85m VIN=5.0V (TYP.) PCs Supply Current : 40A V =5.0V IN Stand-by Current : 0.1A (TYP.) USB Ports/USB Hubs Flag Delay Time : 7.5ms (TYP.) HDMI * At over-current detection : 4ms (TYP.) * At reverse voltage detection Protection Circuit : Reverse Current Prevention 0.9A2.4A(TYP.) Thermal Shutdown Under Voltage Lockout(UVLO Soft-start Functions : Flag Output CE Pin Input Logic Selectable Current Limit Response Time : 2s (TYP.) *Reference value Operating Ambient Temperature : -40+105 Packages : USP-6C Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS XC8108xC20ER C =1.0F(ceramic), C =1.0F(ceramic) IN L 6.0 RILIM=39.2k 5.0 RILIM=18.4k RILIM=5.76k 4.0 RILIM=0k 3.0 2.0 1.0 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Output Current : I A OUT 1/26 Output Voltage : V V OUT XC8108 Series BLOCK DIAGRAM XC8108 Series * Diodes inside the circuit are an ESD protection diode and a parasitic diode. 2/26