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FPF2193

Full-Function Load Switch with Adjustable Current Limit

ON Semiconductor 

FPF2193 / FPF2194 / FPF2195

Full-Function Load Switch with Adjustable Current Limit

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 Shutdow n

 <2 µA Shutdow n 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 Sw ap Supplies

Description

The FPF2193, FPF2194, and FPF2195 form a series of

load sw itches that provides full protection to systems

and loads that may encounter large current conditions.

These devices contain a 55 mΩ 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 flow ing w hen the MOSFET is off and the

output voltage is higher than the input voltage. Sw itch

control is by a logic input (ON) capable of interfacing

directly w ith low -voltage control signals. Each part

contains thermal shutdow n protection that shuts off the

sw itch to prevent damage to the part w hen a continuous

over-current condition causes excessive heating.

When the sw itch current reaches the current limit, the

parts operate in a constant-current mode to prohibit

excessive currents from causing damage. For the

FPF2193 and FPF2194, if the constant current condition

still persists after 30 ms, the parts shut off the sw itch

and pull the fault signal pin (FLAGB) LOW. The

FPF2193 has an auto-restart feature that turns the

sw itch on again after 450 ms if the ON pin is still active.

The FPF2194 does not have this auto-restart feature, so

the sw itch remains off until the ON pin is cycled. The

FPF2195 does not turn off after a current limit fault, but

remains in the constant-current mode indefinitely. The

minimum current limit can be set as low as 45 mA.

These parts are available in a space-saving six ball

advanced 0.98 x 1.48 mm WLCSP package.

Ordering Information

Part Number

Current

Limit [mA]

Current Limit Blanking

Time [ms]

FPF2193

15/30/60

FPF2194

100-1500

15/30/60

FPF2195

0

FPF2195BUCX 45-1500

0

Auto-Restart

Time [ms]

225/450/900

NA

NA

NA

ON Pin

Activity

Active HIGH

Top Mark

S6

S7

S9

SY

© 2009 Semiconductor Components Industries, LLC.

December-2017, Rev. 2

Publication Order Number:

FPF2194/D

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