©2008 Fairchild Semiconductor Corporation

1

www.fairchildsemi.com

FPF2116 Rev. D

tm

August 2008

FPF2116

IntelliMAX™ Advanced Load Management Products

Features

1.8 to 5.5V Input Voltage Range

Controlled Turn-On

200mA Current Limit

Undervoltage Lockout

Thermal Shutdown

<2µA Shutdown Current

Auto Restart

Fast Current limit Response Time

3µs to Moderate Over Currents

20ns to Hard Shorts

Fault Blanking

Reverse Current Blocking

RoHS Compliant

Applications

PDAs

Cell Phones

GPS Devices

MP3 Players

Digital Cameras

Peripheral Ports

Hot Swap Supplies

General Description

The FPF2116 is a load switch which provides full protection to

systems and loads which may encounter large current

conditions. This device contains a 0.125

Ω 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.

The 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 part

operates in a constant-current mode to prohibit excessive

currents from causing damage. If the constant current condition

still persists after 30ms, the part will shut off the switch and pull

the fault signal pin (FLAGB) low. An auto-restart feature will turn

the switch on again after 480ms if the ON pin is still active. The

minimum current limit is 200mA.

The part is available in a space-saving 5 pin SOT23 package.

Typical Application Circuit

Ordering Information

Part

Current Limit

[mA]

Current Limit

Blanking Time

[ms]

Auto-Restart

Time

[ms]

ON Pin

Activity

Top Mark

FPF2116

200

30

480

Active HI

2116

OFF ON

ON

GND

FPF2116

FLAGB

TO LOAD