描述 Description

The FPF2193, FPF2194, and FPF2195 form a series of load switches that provides full protection to systems and loads that may encounter large current conditions. These devices contain a 55 m? current-limited P-channel MOSFET that can operate over an input voltage range of 1.8 to 5.5 V. 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 that shuts off the switch to prevent damage to the part when a continuous over-current condition causes excessive heating.

特性 Features

■ <1.8 to 5.5 V Input Voltage Range

■ Controlled Turn-On

■ 0.1 to 1.5 A Adjustable Current Limit

■ Under-Voltage Lockout

■ Thermal Shutdown

■ <2 μA Shutdown Current

■ Auto Restart

■ Fast Current Limit Response Time

■ 5 μs to Moderate Over Currents

■ 30 ns to Hard Shorts

■ Fault Blanking

■ Reverse Current Blocking

Applications

■ PDAs

■ Cell Phones

■ Handheld GPS Devices

■ Portable Enterprise / Industrial Devices

■ Digital Cameras

■ Peripheral Ports and Accessories

■ Portable Medical Equipment

■ Hot Swap Supplies