FPF2024 Datasheet, PDF (1/17 Pages) Fairchild Semiconductor – Full Functional Load Switch With 100mA Current Limit

September 2008
FPF2024/5/6/7
Full Functional Load Switch With 100mA Current Limit
Features
„ 1.6V to 5.5V Input Voltage Range
„ Ultra Low Average Quiescent Current 1µA typ @1.8V
„ Typical R_DS(ON) = 225mΩ @ V_IN = 3.3V
„ Typical R_DS(ON) = 280mΩ @ V_IN = 1.8V
„ 100mA Fixed Current Limit Minimum
„ Under Voltage Lockout
„ CMOS and Open Drain Fault Flag Options
„ Fault Blanking
„ Auto Restart
„ Thermal Shutdown
„ ESD Protection above 5500V HBM and 1500V CDM
Applications
„ PDAs
„ Cell Phones
„ GPS Devices
„ Digital Cameras
„ Peripheral Ports
„ MP3 Players
Pin 1
V_IN
NC
V_OUT
ON
GND
FLAGB
General Description
The FPF2024/5/6/7 are low R_DS(ON) P-Channel MOSFET load
switches with 150mA typical current limit value targeting small
package load switch applications. The extended input voltage
range spans from 1.6V to 5.5V to fulfill today's Ultra Portable
Device's supply requirements. Switch control is by a logic input
(ON) capable of interfacing directly with a low voltage control
signal.
The FPF2024/5/6/7 respond to an output overload condition by
going into constant current mode where the output current is
regulated by the load switch. If the overcurrent condition
persists beyond the 10ms Blanking Time, FPF2024 and
FPF2025 pull the fault signal pin (FLAGB) low and shut-off the
switch. An Auto-Restart feature turns FPF2024 and FPF2025
on again after 70ms if the ON pin is still active. The FPF2026
has a Latch-Off feature which shuts off the switch off after the
expiration of the 10ms Blanking Time and keeps it off until the
ON pin is toggled. The FPF2027 responds to an overload
condition by immediately pulling the fault signal pin low and the
switch remains in constant current mode until the output
overload condition is removed. FPF2027 has a Startup Blanking
feature which prevents startup transient overcurrent conditions
from triggering the fault signal pin for 10ms after initial turn on
via the ON pin.
These parts are available in a space-saving 6 ball advanced.
Pb-Free 1.0x1.5 mm² CSP package.
BOTTOM
TOP
Ordering Information
Part
FPF2024
FPF2025
FPF2026
FPF2027
Min Current
Limit
[mA]
100
100
100
100
Blanking
Current
Limit Time
[ms]
10
10
10
0
Auto-Restart
Time
[ms]
70
70
NA
NA
ON Pin
Activity
Active HI
Active LO
Active HI
Active HI
FLAGB
Top Mark
Open Drain
S2
CMOS
S3
Open Drain
S4
Open Drain
S5
©2008 Fairchild Semiconductor Corporation
1
FPF2024/5/6/7 Final. B
www.fairchildsemi.com