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This literature is subject to all applicable copyright laws and is not for resale in any manner.FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit February 2009 FPF2223-FPF2225 tm Integrated Load Switch with Adjustable High Precision Current Limit Features General Description 1.8 to 5.5V Input Voltage Range The FPF2223-FPF2225 are low R P-Channel MOSFET DS(ON) load switches with high precision current limit value. The input Typical R = 140m V = 5.5V DS(ON) IN voltage range operates from 1.8V to 5.5V to fulfill today s Ultra Typical R = 160m V = 3.3V DS(ON) IN Portable Device s supply requirement. Switch control is by a 250-625mA (min) Adjustable Current Limit logic input (ON) capable of interfacing directly with low voltage 5% Current Limit Tolerance 625mA (min) control signal. On-chip pull-down is available for output quick 72 (typ) Output Discharge Resistance discharge when switch is turned off. ESD Protected, Above 8kV HBM and 2kV CDM For the FPF2224, if the constant current condition still persists after 30ms, these parts will shut off the switch and pull the fault Applications signal pin (FLAGB) low. The FPF2223 has an auto-restart feature, which will turn the switch on again after 450mS if the PDAs ON pin is still active. The FPF2224 do not have this auto-restart Cell Phones feature so the switch will remain off until the ON pin is cycled. GPS Devices For the FPF2225, a current limit condition will immediately pull MP3 Players the fault signal pin low and the part will remain in the constant- current mode until the switch current falls below the current Digital Cameras limit. For the FPF2223 through FPF2225, the current limit is set Peripheral Ports by an external resistor and the minimum current limit is 250mA. Notebook Computer Pin 1 BOTTOM TOP Ordering Information Current Limit Current Limit Auto-Restart Time ON Pin Part Blanking Time (mA) (mS) Activity (mS) FPF2223 250-625 30 450 Active HI FPF2224 250-625 30 NA Active HI FPF2225 250-625 NA NA Active HI 2008 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FPF2223-FPF2225 Rev. C