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This literature is subject to all applicable copyright laws and is not for resale in any manner.FPF2174 IntelliMAX Advanced Load Management Products February 2009 FPF2174 tm IntelliMAX Advanced Load Management Products Features General Description 1.8 to 5.5V Input Voltage Range The FPF2174 is a load switch which combines the functionality TM of the IntelliMAX series load switch with a very low forward Controlled Turn-On voltage drop Schottky barrier rectifier and a zener clamp at the 200mA Current Limit Option output. The integrated solution provides full protection to Undervoltage Lockout systems and loads which may encounter large current Thermal Shutdown conditions in a very compact MLP 3x3 package. This device <1 A Shutdown Current contain a 0.125 current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. The Schottky Fast Current limit Response Time diode acts as a barrier so that no reverse current can flow when 3 s to Moderate Over Currents the MOSFET is off and the output voltage is higher than the 20ns to Hard Shorts input voltage. Switch control is by a logic input (ON) capable of Integrated very low V Schottky Diode for F interfacing directly with low voltage control signals. Each part Reverse Current Blocking contains thermal shutdown protection which shuts off the switch Integrated Zener Diode for Output Clamp to prevent damage to the part when a continuous over-current condition causes excessive heating. RoHS Compliant When the switch current reaches the current limit, the part Applications operates in a constant-current mode to prohibit excessive currents from causing damage. If the constant current condition PDAs still persists after 10ms, these parts will shut off the switch and Cell Phones pull the fault signal pin (FLAGB) low. The switch will remain off GPS Devices until the ON pin is cycled. The minimum current limit is 200mA. MP3 Players These parts are available in a space-saving 6L MLP 3x3 Digital Cameras package. Peripheral Ports Hot Swap Supplies Typical Application Circuit TO LOAD V V OUT IN FPF2174 OFF ON ON FLAGB GND Ordering Information Current Limit Auto-Restart Current Limit ON Pin Part Blanking Time Time Top Mark Min mA Activity Typ ms ms FPF2174 200 10 NA Active HI 2174 2008 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FPF2174 Rev. F