Fairchild FPF2001 Intellimaxâ ¢ advanced load management product Datasheet

FPF2000-FPF2007
IntelliMAX™ Advanced Load Management Products
General Description
Features
The FPF2000 through FPF2007 is a family of load switches which
provide full protection to systems and loads which may encounter
large current conditions. These devices contain a 0.7Ω
current-limited P-channel MOSFET which can operate over an
input voltage range of 1.8-5.5V. 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.
1.8 to 5.5V Input Voltage Range
Controlled Turn-On
50mA and 100mA Current Limit Options
Undervoltage Lockout
Thermal Shutdown
<1uA Shutdown Current
Auto restart
Fast Current limit Response Time
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 FPF2000-FPF2002 and
FPF2004-FPF2006, if the constant current condition still persists
after 10ms, these parts will shut off the switch and pull the fault
signal pin (FLAGB) low. The FPF2000, FPF2001, FPF2004 and
FPF2005, have an auto-restart feature which will turn the switch on
again after 80ms if the ON pin is still active. The FPF2002 and
FPF2006 do not have this auto-restart feature so the switch will
remain off until the ON pin is cycled. For the FPF2003 and
FPF2007, 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. For the
FPF2000 through FPF2003, the minimum current limit is 50mA
while that for the FPF2004 through FPF2007 is 100mA.
3us to Moderate Over Currents
20ns to Hard Shorts
Fault Blanking
Applications
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
These parts are available in a space-saving 5 pin SC-70 package.
Typical Application Circuit
TO LOAD
VOUT
VIN
FPF2000 - FPF2007
OFF ON
ON
FLAGB
GND
©2005 Fairchild Semiconductor Corporation
FPF2000-FPF2007 Rev. D
1
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
May 2005
VIN
UVLO
CONTROL
LOGIC
ON
CURRENT
LIMIT
VOUT
THERMAL
SHUTDOWN
FLAGB
GND
Pin Configuration
VOUT
1
GND
2
FLAGB
3
5
VIN
4
ON
SC70-5
Pin Description
Pin
Name
Function
1
VOUT
Switch Output: Output of the power switch
2
GND
Ground
3
FLAGB
4
ON
On Control Input
5
VIN
Supply Input: Input to the power switch and the supply voltage for the IC
FPF2000-FPF2007 Rev. D
Fault Output: Active LO, open drain output which indicates an over current, supply under
voltage or over temperature state.
2
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Functional Block Diagram
Parameter
Min.
VIN, VOUT, ON, FLAGB to GND
Max.
-0.3
Power Dissipation @ TA = 25°C (note 1)
Unit
6
V
250
mW
Operating Junction Temperature
-40
125
°C
Storage Temperature
-65
150
°C
400
°C/W
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Protection
HBM
4000
V
MM
400
V
Recommended Operating Range
Parameter
Min.
Max.
Unit
VIN
1.8
5.5
V
Ambient Operating Temperature, TA
-40
85
°C
Electrical Characteristics
VIN = 1.8 to 5.5V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25°C.
Parameter
Symbol
Conditions
Min.
Typ.
Max
Units
5.5
V
Basic Operation
Operating Voltage
VIN
Quiescent Current
IQ
1.8
IOUT = 0mA
VIN = 1.8 to 3.3V
Von active
VIN = 3.3 to 5.5V
60
Shutdown Current
ISHDN
Latch-Off Current (note 2)
ILATCHOFF
VON = VIN, after an overcurrent fault
On-Resistance
RON
TA = 25°C, IOUT = 20mA
0.7
TA = -40 to +85°C, IOUT = 20mA
0.85
ON Input Logic High Voltage
ON Input Logic Low Voltage
VIH
VIL
ON Input Leakage
Off Switch Leakage
ISWOFF
FLAGB Output Logic Low Voltage
FLAGB Output High Leakage Current
A
100
1
40
VIN = 1.8V
0.8
VIN = 5.5V
1.5
A
A
1
V
VIN = 1.8V
0.5
VIN = 5.5V
0.9
V
VON = VIN or GND
1
A
VON = 0V, VOUT = 0V
1
A
V
VIN = 5V, ISINK = 10mA
0.1
0.2
VIN = 1.8V, ISINK = 10mA
0.1
0.3
VIN = 5V, Switch on
1
A
mA
Protections
Current Limit
Thermal Shutdown
FPF2000-FPF2007 Rev. D
ILIM
VIN = 3.3V,
VOUT = 3.0V
FPF2000,
FPF2001,
FPF2002,
FPF2003
50
75
100
FPF2004,
FPF2005,
FPF2006,
FPF2007
100
150
200
Shutdown Threshold
140
Return from Shutdown
130
Hysteresis
10
3
°C
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Absolute Maximum Ratings
VIN = 1.8 to 5.5V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25°C.
Parameter
Symbol
Conditions
Min.
Typ.
Max
1.5
1.6
1.7
Units
Protections
Under Voltage Shutdown
UVLO
VIN Increasing
Under Voltage Shutdown Hysteresis
V
50
mV
Dynamic
Turn on time
tON
RL=500 , CL=0.1uF
50
s
Turn off time
tOFF
RL=500 , CL=0.1uF
0.5
s
VOUT Rise Time
tR
RL=500 , CL=0.1uF
10
s
VOUT Fall Time
tF
RL=500 , CL=0.1uF
Over Current Blanking Time
tBLANK
FPF2000, FPF2001, FPF2002,
FPF2004, FPF2005, FPF2006
5
10
20
ms
Auto-Restart Time
tRSTRT
FPF2000, FPF2001, FPF2004,
FPF2005
40
80
160
ms
Short Circuit Response Time
0.1
s
VIN = VON = 3.3V. Moderate
Over-Current Condition.
3
s
VIN = VON = 3.3V. Hard Short.
20
ns
Note 1: Package power dissipation on 1square inch pad, 2 oz copper board.
Note 2: Applicable only to FPF2002 and FPF2006. Latchoff current does not include current flowing into FLAGB.
FPF2000-FPF2007 Rev. D
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Electrical Characteristics Cont.
75
90
VON = VIN
85
QUIESCENT CURRENT (uA)
QUIESCENT CURRENT (uA)
VON = VIN
70
65
60
55
80
75
VIN = 5.5V
70
65
VIN = 3.3V
60
55
VIN = 1.8V
50
45
40
-40
50
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
-15
10
35
60
85
o
TJ, JUNCTION TEMPERATURE ( C)
SUPPLY VOLTAGE (V)
Figure 1. Quiescent Current vs. Input Voltage
Figure 2. Quiescent Current vs. Temperature
35
35
30
SWITCH-OFF CURRENT (nA)
SHUTDOWN CURRENT (nA)
I_SHDN
25
20
15
VIN = 5V
10
VIN = 3.3V
5
0
-40
-15
10
35
60
30
25
20
15
VIN = 5V
10
VIN = 3.3V
5
0
-40
85
-15
o
10
35
60
85
o
TJ, JUNCTION TEMPERATURE ( C)
TJ, JUNCTION TEMPERATURE ( C)
Figure 3. ISHUTDOWN Current vs. Temperature
Figure 4. ISWITCH-OFF Current vs. Temperature
1.5
52
1.25
48
ON THRESHOLD (V)
LATCH-OFF CURRENT (uA)
VIN = 3.3V
44
40
36
32
28
-40
FPF2000, 2002, 2003, 2004, 2006, 2007
1
FPF2001, 2005
0.75
0.5
0.25
0
-15
10
35
60
85
1.5
TJ, JUNCTION TEMPERATURE (oC)
2.5
3
3.5
4
4.5
5
5.5
6
VIN , INPUT VOLTAGE (V)
Figure 5. ILATCHOFF vs. Temperature
FPF2000-FPF2007 Rev. D
2
Figure 6. VIH vs. VIN
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Typical Characteristics
180
140
160
FPF2004, 2005, 2006, 2007
120
CURRENT LIMIT (mA)
OUTPUT CURRENT (mA)
160
100
80
60
FPF2000, 2001, 2002, 2003
40
20
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3
FPF2004, 2005, 2006, 2007
120
100
80
60
FPF2000, 2001, 2002, 2003
40
0
-40
3.3
-15
10
35
60
VIN - VOUT (V)
TJ, JUNCTION TEMPERATURE (oC)
Figure 7. Current Limit vs. Output Voltage
Figure 8. Current Limit vs. Temperature
85
1.1
1.0
0.9
SWITCH RESISTANCE (Ohms)
SWITCH RESISTANCE (Ohms)
140
20
0
0.8
0.7
0.6
0.5
0.4
0.3
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1
0.9
VIN = 1.8V
0.8
0.7
VIN = 3.6V
0.6
VIN = 5V
0.5
0.4
0.3
-40
5.5
-15
10
35
60
TJ, JUNCTION TEMPERATURE ( C)
Figure 9. R(ON) vs. VIN
Figure 10. R(ON) vs. Temperature
100
ILOAD = 10mA
VCC = 3.3V
85
o
VIN, INPUT VOLTAGE (V)
100
TON
TURN-RISE/FALL TIMES (uS)
TURN-ON/OFF TIMES (uS)
I_LIMIT
10
1
ILOAD = 10mA
VCC = 3.3V
TRise
10
1
TFall
0.1
TOFF
0.1
-40
-15
10
35
60
0.01
-40
85
o
-15
10
35
60
TJ, JUNCTION TEMPERATURE ( C)
Figure 11. TON/TOff vs. Temperature
Figure 12. TRISE/TFALL vs. Temperature
FPF2000-FPF2007 Rev. D
85
o
TJ, JUNCTION TEMPERATURE ( C)
6
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Typical Characteristics
100
11
RESTART TIME (mS)
FLAG-BLANKING TIME (mS)
12
10
9
8
-40
-15
10
35
60
80
60
40
-40
85
35
60
85
Figure 14. TRESTART vs Temperature
VDRV3
2V/DIV
VDRV3
2V/DIV
VOUT
2V/DIV
VOUT
2V/DIV
IOUT
50mA/DIV
IOUT
50mA/DIV
VFLAGB
2V/DIV
VFLAGB
2V/DIV
5mS/DIV
10mS/DIV
Figure 15. TBLANK Response
Figure 16. TRESTART Response
RL = 500Ω, CL = 0.1uF
RL = 500Ω, CL = 0.1uF
VON
2V/DIV
IOUT
10mA/DIV
IOUT
10mA/DIV
50uS/DIV
100nS/DIV
Figure 17. TON Response
FPF2000-FPF2007 Rev. D
10
TJ, JUNCTION TEMPERATURE ( C)
Figure 13. TBLANK vs Temperature
VON
2V/DIV
-15
o
o
TJ, JUNCTION TEMPERATURE ( C)
Figure 18. TOFF Response
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Typical Characteristics
VIN
2V / DIV
VIN ==10uF
VON
C
IN
COUT = 1uF
CIN = 10uF
COUT = 1uF
VIN/VON
2V/DIV
IOUT
2A/DIV
IOUT
200mA/DIV
VOUT
2V/DIV
VIN
2V/DIV
VON
2V/DIV
20uS/DIV
20uS/DIV
Figure 19. Short Circuit Response Time
(Output Shorted to GND)
Figure 20. Current Limit Response
(Switch power up to hard short)
CIN = 10uF
COUT = 1uF
IOUT
100mA/DIV
VOUT
(SHORTED
TO GND)
20uS/DIV
Figure 21. Current Limit Response Time
Note 3: VDRV signal forces the device to go into overcurrent condition.
FPF2000-FPF2007 Rev. D
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Typical Characteristics
Current Limiting
The current limit ensures that the current through the switch
doesn’t exceed a maximum value while not limiting at less than
a minimum value. For the FPF2000-FPF2003 the minimum current is 50mA and the maximum current is 100mA and for the
FPF2004-FPF2007 the minimum current is 100mA and the
maximum current is 200mA. The FPF2000-FPF2002 and the
FPF2004-FPF2006, have a blanking time of 10ms, nominally,
during which the switch will act as a constant current source. At
the end of the blanking time, the switch will be turned-off and
the FLAGB pin will activate to indicate that current limiting has
occurred. The FPF2003 and FPF2007 have no current limit
blanking period so immediately upon a current limit condition
FLAGB is activated. These parts will remain in a constant current state until the ON pin is deactivated or the thermal shutdown turns-off the switch.
The FPF2000-FPF2007 are current limited switches that protect
systems and loads which can be damaged or disrupted by the
application of high currents. The core of each device is a 0.7Ω
P-channel MOSFET and a controller capable of functioning over
a wide input operating range of 1.8-5.5V. The controller protects
against system malfunctions through current limiting, undervoltage lockout and thermal shutdown. The current limit is preset for either 50mA or 100mA.
On/OffControl
The ON pin controls the state of the switch. Active HI and LO
versions are available. Refer to the Ordering Information for
details. Activating ON continuously holds the switch in the on
state so long as there is no fault. For all versions, an under-voltage on VIN or a junction temperature in excess of 150°C overrides the ON control to turn off the switch. In addition, excessive
currents will cause the switch to turn off in FPF2000-FPF2002
and FPF2004-FPF2007. The FPF2000, FPF2001, FPF2004
and FPF2005 have an Auto-Restart feature which will automatically turn the switch on again after 80ms. For the FPF2002 and
FPF2006, the ON pin must be toggled to turn-on the switch
again. The FPF2003 and FPF2007 do not turn off in response to
a over current condition but instead remain operating in a constant current mode so long as ON is active and the thermal
shutdown or under-voltage lockout have not activated.
Reverse Voltage
If the voltage at the VOUT pin is larger than the VIN pin, large
curents may flow and can cause permanent damage to the
device. FPF2000-FPF2007 is designed to control current flow
from VIN to VOUT.
Under-Voltage Lockout
The under-voltage lockout turns-off the switch if the input voltage drops below the under-voltage lockout threshold. With the
ON pin active the input voltage rising above the under-voltage
lockout threshold will cause a controlled turn-on of the switch
which limits current over-shoots.
Fault Reporting
Upon the detection of an over-current, an input under-voltage,
or an over-temperature condition, the FLAGB signals the fault
mode by activating LO. For the FPF2000-FPF2002 and
FPF2004-FPF2006, the FLAGB goes LO at the end of the
blanking time while FLAGB goes LO immediately for the
FPF2003 and FPF2007. FLAGB remains LO through the AutoRestart Time for the FPF2000, FPF2001 FPF2004 and
FPF2005. For the FPF2002 and FPF2006, FLAGB is latched
LO and ON must be toggled to release it. With the FPF2003 and
FPF2007, FLAGB is LO during the faults and immediately
returns HI at the end of the fault condition. FLAGB is an opendrain MOSFET which requires a pull-up resistor between VIN
and FLAGB. During shutdown, the pull-down on FLAGB is disabled to reduce current draw from the supply.
Thermal Shutdown
The thermal shutdown protects the die from internally or externally generated excessive temperatures. During an over-temperature condition the FLAGB is activated and the switch is
turned-off. The switch automatically turns-on again if temperature of the die drops below the threshold temperature.
Ordering Information
Current Limit
[mA]
Current Limit
Blanking Time
[ms]
FPF2000
50
10
FPF2001
50
10
FPF2002
50
10
NA
Active HI
202
FPF2003
50
0
NA
Active HI
203
Part
Auto-Restart
Time
[ms]
ON Pin
Activity
Top Mark
80
Active HI
200
80
Active LO
201
FPF2004
100
10
80
Active HI
204
FPF2005
100
10
80
Active LO
205
FPF2006
100
10
NA
Active HI
206
FPF2007
100
0
NA
Active HI
207
FPF2000-FPF2007 Rev. D
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Description of Operation
Typical Application
VOUT
VIN
FPF2000 - FPF2007
Battery
1.8V-5.5V
OFF ON
ON
LOAD
R1 = 100KΩ
R2 = 499Ω
FLAGB
C2 = 0.1µF
GND
C1 = 10µF
Input Capacitor
Over Current Blanking Time, tBLANK, so that the maximum
power dissipated is,
To limit the voltage drop on the input supply caused by transient
in-rush currents when the switch turns-on into a discharged load
capacitor or a short-circuit, a capacitor needs to be placed
between VIN and GND. A 0.1µF ceramic capacitor, CIN, placed
close to the pins is usually sufficient. Higher values of CIN can
be used to further reduce the voltage drop.
t BLANK
P ( max ) = -------------------------------------------------- x ( V IN ( max ) )xI LIM ( max ) =
t RESTART + tBLANK
10
= ------------------- × 5.5 × 0.2 = 1.22mW
80 + 10
Output Capacitor
When using the FPF2002 and FPF2006 attention must be given
to the manual resetting of the part. Continuously resetting the
part at a high duty cycle when a short on the output is present
can cause the temperature of the part to increase. The junction
temperature will only be allowed to increase to the thermal shutdown threshold. Once this temperature has been reached, toggling ON will not turn-on the switch until the junction
temperature drops. For the FPF2003 and FPF2007, a short on
the output will cause the part to operate in a constant current
state dissipating a worst case power as calculated in (3) until
the thermal shutdown activates. It will then cycle in and out of
thermal shutdown so long as the ON pin is active and the short
is present.
A 0.1µF capacitor COUT, should be placed between VOUT and
GND. This capacitor will prevent parasitic board inductances
from forcing VOUT below GND when the switch turns-off. For the
FPF2000-FPF2002 and the FPF2004-FPF2006, the total output
capacitance needs to be kept below a maximum value,
COUT(max), to prevent the part from registering an over-current
condition and turning-off the switch. The maximum output
capacitance can be determined from the following formula,
ILIM ( max ) × t BLANK ( min )
C OUT = -------------------------------------------------------------------V IN
(1)
Board Layout
Due to the integral body diode in the PMOS switch, a CIN
greater than COUT is highly recommended. A COUT greater than
CIN can cause VOUT to exceed VIN when the system supply is
removed. This could result in current flow through the body
diode from VOUT to VIN.
For best performance, all traces should be as short as possible.
To be most effective, the input and output capacitors should be
placed close to the device to minimize the effects that parasitic
trace inductances may have on normal and short-circuit operation. Using wide traces for VIN, VOUT and GND will help minimize parasitic electrical effects along with minimizing the case
to ambient thermal impedance.
Power Dissipation
During normal operation as a switch, the power dissipation is
small and has little effect on the operating temperature of the
part. The parts with the higher current limits will dissipate the
most power and that will only be,
2
2
P = ( I LIM ) × R DS = ( 0.2 ) × 0.7 = 28mW
(3)
(2)
If the part goes into current limit the maximum power dissipation
will occur when the output is shorted to ground. For the
FPF2000, FPF2001, FPF2004 and FPF2005, the power dissipation will scale by the Auto-Restart Time, tRESTART, and the
FPF2000-FPF2007 Rev. D
10
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FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Application Information
FPF2000-FPF2007 IntelliMAX™ Advanced Load Management Products
Dimensional Outline and Pad Layout
SYMM
CL
0.65
2.00±0.20
A
.5 min
5
B
4
1.9
1.25±0.10
1
3
0.4 min
0.30
0.15
(0.25)
1.30
0.65
0.10 M A B
1.30
1.00
0.80
LAND PATTERN RECOMMENDATION
SEE DETAIL A
1.10
0.80
C
0.10
0.00
Seating Plane
0.10 C
(0.43)
2.10±0.10
GAGE PLANE
R0.10
0.25
0.10
0.20
0.45
0.30
0°-30°
DETAIL A
NOTES:
A. THIS PACKAGE CONFORMS TO EIAJ SC-88A, 1996.
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS DO NOT INCLUDE BURRS OR MOLD FLASH.
FPF2000-FPF2007 Rev. D
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FPF2000-FPF2007 Rev. D