FPF2165

FPF2163/4/5 Full Function Load Switch with Adjustable Current Limit October 2008 FPF2163/4/5 Full Function Load Switch with Adjustable Current Limit Features „ 1.8 to 5.5V Input Voltage Range „ Controlled Turn-On „ 0.15-1.5A Adjustable Current Limit „ Undervoltage Lockout „ Thermal Shutdown „ <2µA Shutdown Current „ Auto Restart „ Fast Current limit Response Time „ 5µs to Moderate Over Currents „ 30ns to Hard Shorts „ Fault Blanking „ Reverse Current Blocking „ RoHS Compliant tm General Description The FPF2163, FPF2164, and FPF2165 is a series of load switches which provides full protection to systems and loads which may encounter large current conditions. These devices contain a 0.12Ω current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. Internally, current is prevented from flowing when the MOSFET is off and the output voltage is higher than the input voltage. Switch control is by a logic input (ON) capable of interfacing directly with low voltage control signals. Each part contains thermal shutdown protection which shuts off the switch to prevent damage to the part when a continuous over-current condition causes excessive heating. When the switch current reaches the current limit, the parts operate in a constant-current mode to prohibit excessive currents from causing damage. For the FPF2163 and FPF2164, if the constant current condition still persists after 30ms, these parts will shut off the switch and pull the fault signal pin (...