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This literature is subject to all applicable copyright laws and is not for resale in any manner.FPF2140/42/43/44/46/47 Full Function Load Switch with Reverse Current Blocking November 2008 FPF2140/42/43/44/46/47 tm Full Function Load Switch with Reverse Current Blocking Features General Description 1.8 to 5.5V Input Voltage Range The FPF2140/42/43/44/46/47 is a series of load switches which provides full protection to systems and loads which may Controlled Turn-On encounter large current conditions. These devices contain a 200mA and 400mA Current Limit Options 0.12 current-limited P-channel MOSFET which can operate Undervoltage Lockout over an input voltage range of 1.8-5.5V. Internally, current is Thermal Shutdown prevented from flowing when the MOSFET is off and the output <2A Shutdown Current voltage is higher than the input voltage. Switch control is by a logic input (ON) capable of interfacing directly with low voltage Auto Restart control signals. Each part contains thermal shutdown protection Fast Current limit Response Time which shuts off the switch to prevent damage to the part when a 5s to Moderate Over Currents continuous over-current condition causes excessive heating. 30ns to Hard Shorts When the switch current reaches the current limit, the part Fault Blanking operates in a constant-current mode to prohibit excessive Reverse Current Blocking currents from causing damage. For the FPF2140/42/44/46, if Power Good Function the constant current condition still persists after 30ms, the part will shut off the switch and pull the fault signal pin (FLAGB) low. RoHS Compliant The FPF2140/44 have an auto-restart feature which will turn the switch on again after 450ms if the ON pin is still active. The Applications FPF2142/46 do not have this auto-restart feature so the switch PDAs will remain off until the ON pin is cycled. For the FPF2143/47, a Cell Phones current limit condition will immediately pull the fault signal pin low and the part will remain in the constant-current mode until GPS Devices the switch current falls below the current limit. The minimum MP3 Players current limit is 200mA for the FPF2140/42/43 while that for the Digital Cameras FPF2144/46/47 is 400mA. Peripheral Ports These parts are available in a space-saving 6 pin 2X2 MLP Hot Swap Supplies package. Pin 1 TOP BOTTOM Ordering Information Current Limit Auto-Restart Current Limit ON Pin Part Blanking Time Time mA Activity ms ms FPF2140 200/300/400 15/30/60 225/450/900 Active HI FPF2142 200/300/400 15/30/60 NA Active HI FPF2143 200/300/400 0 NA Active HI FPF2144 400/600/800 15/30/60 225/450/900 Active HI FPF2146 400/600/800 15/30/60 NA Active HI FPF2147 400/600/800 0 NA Active HI 2008 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FPF2140/42/43/44/46/47 Rev. I