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FPF2024/5/6/7
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
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 mm
2
CSP package.
Applications
PDAs
Cell Phones
GPS Devices
Digital Cameras
Peripheral Ports
MP3 Players
Pin 1
V
IN
NC
ON
FLAGB
GND
V
OUT
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
Open Drain
CMOS
Open Drain
Open Drain
Top Mark
S2
S3
S4
S5
©2008 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
FPF2024/5/6/7 Final. B
Full Functional Load Switch With 100mA Current Limit
Typical Application Circuit
V
IN
V
OUT
TO LOAD
FPF2024, FPF2026, FPF2027
GND
OFF ON
ON
FLAGB
V
IN
V
OUT
TO LOAD
FPF2025
ON
GND
OFF ON
FLAGB
Functional Block Diagram
V
IN
FPF2024, FPF2026, FPF2027
UVLO
ON
THERMAL
PROTECTION
FLAGB
CONTROL
LOGIC
CURRENT
LIMIT
V
OUT
GND
V
IN
UVLO
ON
THERMAL
PROTECTION
FPF2025
CONTROL
LOGIC
CURRENT
LIMIT
FLGAB
V
OUT
GND
©2008 Fairchild Semiconductor Corporation
FPF2024/5/6/7 Final. B
2
www.fairchildsemi.com
Full Functional Load Switch With 100mA Current Limit
Pin Configuration
V
IN
NC
ON
A2
B2
C2
A1
B1
C1
V
OUT
GND
OUTB
FLAGB
1.0X1.5CSP Bottom View
Pin Description
Pin
A1
A2
B1
B2
C1
C2
Name
V
OUT
V
IN
GND
NC
FLAGB
ON
Function
Switch Output: Output of the power switch
Supply Input: Input to the power switch and the supply voltage for the IC
Ground
No Connection
Fault Output: Active LO, open drain output for FPF2024/6/7 and CMOS output for FPF2025.
FLAGB indicates an over current, supply under voltage or over temperature state
ON/OFF Control Input, Active High for FPF2024/6/7 and Active LO for FPF2025
Absolute Maximum Ratings
Parameter
V
IN
, V
OUT
, ON, FLAGB to GND
Power Dissipation @ T
A
= 25°C
(Note
1)
Maximum Continuous Switch Current
Operating Temperature Range
Storage Temperature
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Protection
HBM
CDM
Note1: Package power dissipation on 1square inch pad, 2 oz. copper board.
5500
1500
-40
-65
Min.
-0.3
Max.
6
1.2
0.2
125
150
85
Unit
V
W
A
°C
°C
°C/W
V
V
Recommended Operating Range
Parameter
V
IN
Ambient Operating Temperature, T
A
Min.
1.6
-40
Max.
5.5
85
Unit
V
°C
©2008 Fairchild Semiconductor Corporation
FPF2024/5/6/7 Final. B
3
www.fairchildsemi.com
Full Functional Load Switch With 100mA Current Limit
Electrical Characteristics
V
IN
= 1.6 to 5.5V, T
A
= -40 to +85°C unless otherwise noted. Typical values are at V
IN
= 3.3V and T
A
= 25°C.
Parameter
Basic Operation
Operating Voltage
Quiescent Current
Shutdown Current
Symbol
V
IN
I
Q
I
SHDN
Conditions
Min.
1.6
Typ.
Max.
5.5
Units
V
µA
µA
I
OUT
= 0mA, V
ON
Active,
V
IN
= 1.8V (Average)
V
ON
= V
IN
(FPF2025)
V
ON
= GND (FPF2024/6/7), I
OUT
= 0
T
A
= 25°C, V
IN
= 5.5V
T
A
= -40 to +85°C, V
IN
= 5.5V
120
140
180
0.8
1.5
T
A
= 25°C,V
IN
= 3.3V
T
A
= -40 to +85°C, V
IN
= 3.3V
T
A
= 25°C,V
IN
= 1.6V
T
A
= -40 to +85°C, V
IN
= 1.6V
V
IN
= 1.6V
V
IN
= 5.5V
V
IN
= 1.6V
V
IN
= 5.5V
V
ON
= V
IN
or GND
V
ON
= V
IN
, V
OUT
= 0V
V
IN
= 5.5V, I
SINK
= 1mA
V
IN
= 1.8V, I
SINK
= 1mA
V
IN
= 5.5V, I
SOURCE
= 1mA, FPF2025
V
IN
= 1.6V, I
SOURCE
= 1mA, FPF2025
V
IN
= 5.5V, Switch on,
FPF2024, FPF2026, FPF2027
5.2
1.2
1
4
1
215
215
225
225
305
305
315
350
325
360
490
580
V
0.45
0.9
1
1
V
µA
µA
V
V
1
µA
mΩ
On-Resistance
R
ON
ON Input Logic High Voltage (ON)
ON Input Logic Low Voltage
ON Input Leakage
Off Switch Leakage
FLAGB Output Logic Low Voltage
FLAGB Output Logic High Voltage
FLAGB Output High Leakage Current
Protections
Current Limit
Thermal Shutdown
Under Voltage Lockout
Under Voltage Lockout Hysteresis
Dynamic
Turn On Time
Turn Off Time
V
OUT
Rise Time
Over Current Blanking Time
Startup FLAGB Blanking Time
Auto-Restart Time
Sleep Mode Duration
Wake-up Mode Duration
Duty Cycle
Current Limit Response Time
Blanking/Auto-Restart Duty Ratio
V
IH
V
IL
I
SWOFF
0.1
0.1
5.4
1.35
0.2
0.3
I
LIM
V
IN
= 3.3V, V
OUT
= 3.0V,T
A
= 25°C
Shutdown Threshold T
J
increasing
Return from Shutdown
Hysteresis
100
150
140
130
10
200
mA
°C
UVLO
V
IN
Increasing
1.475
1.525
40
1.575
V
mV
µs
µs
µs
t
ON
t
OFF
t
RISE
t
BLANK
t
RSTRT
R
L
= 500Ω, C
L
= 0.1µF
R
L
= 500Ω
R
L
= 500Ω, C
L
= 0.1µF
FPF2024, FPF2025,FPF2026
FPF2024, FPF2025
5
5
35
128.5
0.5
Wake-up: Sleep Mode Duty Cycle
Moderate Over-current condition
RL= 5Ohms
t
BLANK
/t
RSTRT
(internally fixed)
FPF2024, FPF2025
70
10
30
10
10
70
257
1
1:257
15
1:7
20
20
140
514
2
ms
ms
ms
ms
ms
t
S
TART
_
BLANK
FPF2027 (Note2)
µs
Note2: FPF2027 has a 10ms Startup FLAGB Blanking Time when the part is turned on via ON pin to ensure transient load currents
settle down.
©2008 Fairchild Semiconductor Corporation
FPF2024/5/6/7 Final. B
4
www.fairchildsemi.com
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