General Description

The FPF2140/42/43/44/46/47 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.

Features

■ 1.8 to 5.5V Input Voltage Range

■ Controlled Turn-On

■ 200mA and 400mA Current Limit Options

■ 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

■ Power Good Function

■ RoHS Compliant

Applications

■ PDAs

■ Cell Phones

■ GPS Devices

■ MP3 Players

■ Digital Cameras

■ Peripheral Ports

■ Hot Swap Supplies