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FPF2180/82/83/84/86/87 Full Function Load Switch with Reverse Current Blocking
October 2007
FPF2180/82/83/84/86/87
Full Function Load Switch with Reverse Current Blocking
Features
1.8 to 5.5V Input Voltage Range
Controlled Turn-On
200mA and 400mA Current Limit Options
Undervoltage Lockout
Thermal Shutdown
<2 A Shutdown Current
Auto Restart
Fast Current limit Response Time
5 s to Moderate Over Currents
30ns to Hard Shorts
Fault Blanking
Reverse Current Blocking
Power Good Function
RoHS Compliant
General Description
The FPF2180/82/83/84/86/87 is a series of load switches which
provides full protection to systems and loads which may
encounter large current conditions. These devices contain a
55m 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.
When the switch current reaches the current limit, the part
operates in a constant-current mode to prohibit excessive
currents from causing damage. For the FPF2180/82/84/86, if
the constant current condition still persists after 30ms, the part
will shut off the switch and pull the fault signal pin (FLAGB) low.
The FPF2180/84 have an auto-restart feature which will turn the
switch on again after 450ms if the ON pin is still active. The
FPF2182/86 do not have this auto-restart feature so the switch
will remain off until the ON pin is cycled. For the FPF2183/87, a
current limit condition will immediately pull the fault signal pin
low and the part will remain in the constant-current mode until
the switch current falls below the current limit. The minimum
current limit is 200mA for the FPF2180/82/83 while that for the
FPF2184/86/87 is 400mA.
These parts are available in a space-saving 6 ball advanced.
Pb-Free 1 x 1.5 mm CSP package.
Applications
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
Pin 1
ON
V
IN
GND
V
OUT
PGOOD
FLAGB
BOTTOM
TOP
Ordering Information
Part
FPF2180
FPF2182
FPF2183
FPF2184
FPF2186
FPF2187
Current Limit
[mA]
200/300/400
200/300/400
200/300/400
400/600/800
400/600/800
400/600/800
Current Limit
Blanking Time
[ms]
15/30/60
15/30/60
0
15/30/60
15/30/60
0
1
Auto-Restart
Time
[ms]
225/450/900
NA
NA
225/450/900
NA
NA
ON Pin
Activity
Active HI
Active HI
Active HI
Active HI
Active HI
Active HI
Top Mark
A
B
C
D
E
F
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©2007 Fairchild Semiconductor Corporation
FPF2180/82/83/84/86/87 Rev. F
FPF2180/82/83/84/86/87 Full Function Load Switch with Reverse Current Blocking
Typical Application Circuit
TO LOAD
V
IN
PGOOD
OFF ON
ON
GND
V
OUT
FLAGB
FPF2180/2/3/4/6/7
Functional Block Diagram
V
IN
UVLO
REVERSE
CURRENT
BLOCKING
CURRENT
LIMIT
ON
THERMAL
SHUTDOWN
CONTROL
LOGIC
V
OUT
FLAGB
PGOOD
GND
FPF2180/82/83/84/86/87 Rev. F
2
www.fairchildsemi.com
FPF2180/82/83/84/86/87 Full Function Load Switch with Reverse Current Blocking
Pin Configuration
A2
A1
B2
B1
C2
C1
1.0 x 1.5 CSP Bottom View
Pin Description
Pin
C1
B2
B1
A1
C2
A2
Name
PGOOD
V
IN
V
OUT
FLAGB
GND
ON
Function
Power Good output: Open drain output which indicate that output voltage has reached 90%
of input voltage
Supply Input: Input to the power switch and the supply voltage for the IC
Switch Output: Output of the power switch
Fault Output: Active LO, open drain output which indicates an over current supply under
voltage or over temperature state.
Ground
ON Control Input
Absolute Maximum Ratings
Parameter
V
IN
, V
OUT
, ON, FLAGB, PGOOD to GND
Power Dissipation @ T
A
= 25° (Note 1)
C
Operating Temperature Range
Storage Temperature
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Protection
HBM
MM
8000
400
-40
-65
Min.
-0.3
Max.
6
1.2
125
150
85
Unit
V
W
°C
°C
°
C/W
V
V
Recommended Operating Range
Parameter
V
IN
Ambient Operating Temperature, T
A
Min.
1.8
-40
Max.
5.5
85
Unit
V
°C
Electrical Characteristics
V
IN
= 1.8 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
Symbol
V
IN
I
Q
Conditions
Min.
1.8
Typ.
Max.
5.5
Units
V
A
I
OUT
= 0mA
V
ON
= V
IN
V
IN
= 1.8V
V
IN
= 3.3V
V
IN
= 5.5V
70
75
85
55
80
135
m
On-Resistance
R
ON
T
A
= 25°C, I
OUT
= 200mA
T
A
= -40 to +85°C, I
OUT
= 200mA
Note 1:
Package power dissipation on 1square inch pad, 2 oz. copper board.
FPF2180/82/83/84/86/87 Rev. F
3
www.fairchildsemi.com
FPF2180/82/83/84/86/87 Full Function Load Switch with Reverse Current Blocking
Electrical Characteristics Cont.
V
IN
= 1.8 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
ON Input Logic High Voltage (ON)
ON Input Logic Low Voltage
ON Input Leakage
V
IN
Shutdown Current
FLAGB Output Logic Low Voltage
FLAGB Output High Leakage Current
PGOOD Threshold Voltage
PGOOD Threshold Voltage
Hysteresis
PGOOD Output Logic Low Voltage
PGOOD Output High Leakage
Current
Reverse Block
V
OUT
Shutdown Current
Reverse Breakdown Voltage
Protections
Symbol
V
IH
V
IL
V
IN
= 1.8V
V
IN
= 5.5V
V
IN
= 1.8V
V
IN
= 5.5V
Conditions
Min.
0.8
1.4
Typ.
Max.
Units
V
0.5
1.0
-1
-2
0.05
0.12
90
1
0
1
2
0.2
0.3
1
V
A
A
V
A
%
%
V
ON
= V
IN
or GND
V
ON
= 0V, V
IN
= 5.5V,
V
OUT
= short to GND
V
IN
= 5V, I
SINK
= 10mA
V
IN
= 1.8V, I
SINK
= 10mA
V
IN
= V
ON
= 5V
V
IN
= 5V, I
SINK
= 10mA
V
IN
= 1.8V, I
SINK
= 10mA
V
IN
= 5V, Switch ON
0.05
0.12
0.2
0.3
1
V
V
A
V
ON
= 0V, V
OUT
= 5.5V,
V
IN
= short to GND
V
breakdown
V
IN
= V
ON
= 0V, I
OUT
= 200 A
FPF2180
FPF2182
FPF2183
FPF2184
FPF2186
FPF2187
-2
9
2
A
V
200
300
400
mA
Current Limit
I
LIM
V
IN
= 3.3V,
V
OUT
= 3.0V
400
600
140
130
10
800
°C
°C
°C
1.75
V
mV
s
s
s
s
s
s
60
900
ms
ms
s
ns
Shutdown Threshold T
J
increasing
Thermal Shutdown
Under Voltage Lockout
Under Voltage Lockout Hysteresis
Dynamic
Delay On Time
V
OUT
Rise Time
Turn On Time
Delay Off Time
V
OUT
Fall Time
Turn Off Time
Over Current Blanking Time
Auto-Restart Time
Short Circuit Response Time
td
ON
t
R
t
ON
td
OFF
t
F
t
OFF
t
BLANK
t
RSTRT
R
L
=500 , C
L
=0.1 F
R
L
=500 , C
L
=0.1 F
R
L
=500 , C
L
=0.1 F
R
L
=500 , C
L
=0.1 F
R
L
=500 , C
L
=0.1 F
R
L
=500 , C
L
=0.1 F
FPF2180, FPF2182, FPF2184,
FPF2186
FPF2180,FPF2184
V
IN
= V
ON
= 3.3V. Moderate
Over-Current Condition
V
IN
= V
ON
= 3.3V. Hard Short
15
225
V
UVLO
Return from Shutdown
Hysteresis
V
IN
Increasing
1.55
1.65
50
20
20
40
15
110
125
30
450
5
30
FPF2180/82/83/84/86/87 Rev. F
4
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Embedded System
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