FPF2005-G [FAIRCHILD]
Peripheral Driver;
| 型号： | FPF2005-G |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Peripheral Driver 光电二极管 |
| 文件： | 总12页 (文件大小：413K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
May 2005
FPF2000-FPF2007
IntelliMAX™ Advanced Load Management Products
Features
General Description
¢ 1.8 to 5.5V Input Voltage Range
The FPF2000 through FPF2007 is a family of load switches which
provide full protection to systems and loads which may encounter
¢ Controlled Turn-On
large current conditions. These devices contain
a 0.7Ω
¢ 50mA and 100mA Current Limit Options
¢ Undervoltage Lockout
¢ Thermal Shutdown
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.
¢ <1uA Shutdown Current
¢ Auto restart
¢ Fast Current limit Response Time
¢ 3us to Moderate Over Currents
¢ 20ns to Hard Shorts
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.
¢ 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
V
V
OUT
IN
FPF2000 - FPF2007
OFF ON
ON
FLAGB
GND
©2005 Fairchild Semiconductor Corporation
FPF2000-FPF2007 Rev. D
1
www.fairchildsemi.com
Functional Block Diagram
V
IN
UVLO
CONTROL
LOGIC
ON
CURRENT
LIMIT
V
OUT
THERMAL
SHUTDOWN
FLAGB
GND
Pin Configuration
V
5
4
V
IN
1
OUT
GND
2
3
ON
FLAGB
SC70-5
Pin Description
Pin
Name
Function
1
2
3
V
Switch Output: Output of the power switch
Ground
OUT
GND
FLAGB
Fault Output: Active LO, open drain output which indicates an over current, supply under
voltage or over temperature state.
4
5
ON
On Control Input
V
Supply Input: Input to the power switch and the supply voltage for the IC
IN
2
www.fairchildsemi.com
FPF2000-FPF2007 Rev. D
Absolute Maximum Ratings
Parameter
Min.
Max.
6
Unit
V
V
, V
, ON, FLAGB to GND
-0.3
IN
OUT
Power Dissipation @ T = 25°C (note 1)
250
125
150
400
mW
°C
A
Operating Junction Temperature
Storage Temperature
-40
-65
°C
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Protection
°C/W
V
HBM
MM
4000
400
V
Recommended Operating Range
Parameter
Min.
1.8
Max.
5.5
Unit
V
V
IN
Ambient Operating Temperature, T
-40
85
°C
A
Electrical Characteristics
V
=1.8to5.5V,T =-40to+85°Cunlessotherwisenoted. TypicalvaluesareatV =3.3VandT =25°C.
A IN A
IN
Parameter
Symbol
Conditions
Min.
Typ.
Max Units
Basic Operation
Operating Voltage
Quiescent Current
V
1.8
5.5
V
IN
I
I
= 0mA
V
V
= 1.8 to 3.3V
= 3.3 to 5.5V
60
ꢀA
Q
OUT
IN
Von active
100
1
IN
Shutdown Current
Latch-Off Current (note 2)
On-Resistance
I
I
ꢀA
ꢀA
ꢀ
SHDN
V
= V , after an overcurrent fault
40
0.7
LATCHOFF
ON
IN
R
T = 25°C, I = 20mA
OUT
1
ON
A
T = -40 to +85°C, I
= 20mA
0.85
A
OUT
ON Input Logic High Voltage
ON Input Logic Low Voltage
V
V
V
V
V
V
V
V
V
V
V
= 1.8V
= 5.5V
= 1.8V
= 5.5V
0.8
1.5
V
V
IH
IN
IN
0.5
0.9
1
IL
IN
IN
ON Input Leakage
= V or GND
ꢀA
ꢀA
V
ON
ON
IN
Off Switch Leakage
I
= 0V, V
= 0V
1
SWOFF
OUT
FLAGB Output Logic Low Voltage
= 5V, I
= 10mA
SINK
0.1
0.1
0.2
0.3
1
IN
IN
IN
= 1.8V, I
= 10mA
SINK
FLAGB Output High Leakage Current
Protections
= 5V, Switch on
ꢀA
Current Limit
I
V
V
= 3.3V,
FPF2000,
FPF2001,
FPF2002,
FPF2003
50
75
100
200
mA
LIM
IN
= 3.0V
OUT
FPF2004,
FPF2005,
FPF2006,
FPF2007
100
150
Thermal Shutdown
Shutdown Threshold
Return from Shutdown
Hysteresis
140
130
10
°C
3
www.fairchildsemi.com
FPF2000-FPF2007 Rev. D
Electrical Characteristics Cont.
V
= 1.8 to 5.5V, T = -40 to +85°C unless otherwise noted. Typical values are at V = 3.3V and T = 25°C.
IN
A
IN
A
Parameter
Symbol
Conditions
Min.
Typ.
Max Units
Protections
Under Voltage Shutdown
Under Voltage Shutdown Hysteresis
Dynamic
UVLO
V
Increasing
1.5
1.6
50
1.7
V
IN
mV
Turn on time
t
t
t
t
t
RL=500ꢁ, CL=0.1uF
RL=500ꢁ, CL=0.1uF
RL=500ꢁ, CL=0.1uF
RL=500ꢁ, CL=0.1uF
50
0.5
10
ꢀs
ꢀs
ꢀs
ꢀs
ms
ON
OFF
R
Turn off time
V
V
Rise Time
Fall Time
OUT
OUT
0.1
10
F
Over Current Blanking Time
FPF2000, FPF2001, FPF2002,
FPF2004, FPF2005, FPF2006
5
20
BLANK
Auto-Restart Time
t
FPF2000, FPF2001, FPF2004,
FPF2005
40
80
3
160
ms
ꢀs
ns
RSTRT
Short Circuit Response Time
V
= V = 3.3V. Moderate
IN ON
Over-Current Condition.
V
= V = 3.3V. Hard Short.
20
IN
ON
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.
4
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FPF2000-FPF2007 Rev. D
Typical Characteristics
75
90
85
80
75
70
65
60
55
50
45
40
VON = V
IN
VON = VIN
70
65
60
55
50
VIN = 5.5V
VIN = 3.3V
VIN = 1.8V
-40
-15
10
35
60
85
85
6
1
1.5
2
2.5
3
3.5
SUPPLYVOLTAGE (V)
Figure 1. Quiescent Current vs. Input Voltage
4
4.5
5
5.5
6
TJ, JUNCTIONTEMPERATURE(oC)
Figure 2. Quiescent Current vs. Temperature
35
30
25
20
15
10
5
35
30
25
20
15
10
5
I_SHDN
VIN = 5V
V
IN = 5V
VIN = 3.3V
V
IN = 3.3V
0
0
-40
-15
10
35
60
85
-40
-15
10
35
60
TJ, JUNCTIONTEMPERATURE (oC)
TJ, JUNCTIONTEMPERATURE (oC)
Figure 3. I
Current vs. Temperature
Figure 4. I
Current vs. Temperature
SHUTDOWN
SWITCH-OFF
1.5
52
48
44
40
36
32
28
V
IN = 3.3V
1.25
1
FPF2000, 2002, 2003, 2004, 2006, 2007
FPF2001, 2005
0.75
0.5
0.25
0
-40
-15
10
35
60
85
1.5
2
2.5
3
3.5
IN , INPUT VOLTAGE (V)
Figure 6. V vs. V
4
4.5
5
5.5
TJ, JUNCTIONTEMPERATURE (oC)
V
Figure 5. I
vs. Temperature
LATCHOFF
IH
IN
5
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FPF2000-FPF2007 Rev. D
Typical Characteristics
160
140
180
160
140
120
100
80
I_LIMIT
FPF2004, 2005, 2006, 2007
120
100
80
60
40
20
0
FPF2004, 2005, 2006, 2007
FPF2000, 2001, 2002, 2003
60
FPF2000, 2001, 2002, 2003
40
20
0
-40
-15
10
35
60
85
85
85
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
3
3.3
VIN - VOUT (V)
TJ, JUNCTIONTEMPERATURE (oC)
Figure 7. Current Limit vs. Output Voltage
Figure 8. Current Limit vs. Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
V
IN = 1.8V
V
IN = 3.6V
V
IN = 5V
-40
-15
10
TJ, JUNCTION TEMPERATURE (oC)
Figure 10. R vs. Temperature
35
60
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V , INPUT VOLTAGE (V)
IN
Figure 9. R
vs. V
IN
(ON)
(ON)
100
10
1
100
ILOAD = 10mA
VCC = 3.3V
ILOAD = 10mA
VCC = 3.3V
TON
TRise
10
1
TFall
0.1
0.01
TOFF
0.1
-40
-15
10
35
60
85
-40
-15
10
35
60
TJ, JUNCTION TEMPERATURE (oC)
TJ, JUNCTION TEMPERATURE (oC)
Figure 11. T /T
vs. Temperature
Figure 12. T
/T
vs. Temperature
ON Off
RISE FALL
6
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FPF2000-FPF2007 Rev. D
Typical Characteristics
12
100
80
11
10
9
60
40
8
-40
-15
10
TJ, JUNCTION TEMPERATURE (oC)
Figure 13. T vs Temperature
35
60
85
-40
-15
10
35
60
85
TJ, JUNCTION TEMPERATURE (oC)
Figure 14. T
vs Temperature
RESTART
BLANK
3
3
V
V
DRV
DRV
2V/DIV
2V/DIV
V
V
OUT
OUT
2V/DIV
2V/DIV
I
I
OUT
OUT
50mA/DIV
50mA/DIV
V
V
FLAGB
FLAGB
2V/DIV
2V/DIV
5mS/DIV
Figure 15. T Response
10mS/DIV
Figure 16. T Response
BLANK
RESTART
R = 500Ω, C = 0.1uF
R = 500Ω, C = 0.1uF
L
L
L
L
V
ON
V
ON
2V/DIV
2V/DIV
I
OUT
I
OUT
10mA/DIV
10mA/DIV
50uS/DIV
Figure 17. T Response
100nS/DIV
Figure 18. T
Response
ON
OFF
7
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FPF2000-FPF2007 Rev. D
Typical Characteristics
C
C
=10uF
IN
OUT
V
IN
= 1uF
2V / DIV
C
C
=10uF
= 1uF
IN
OUT
V
/V
IN ON
2V/DIV
I
OUT
I
OUT
2A/DIV
200mA/DIV
V
OUT
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)
V
IN
2V/DIV
C
=10uF
IN
C
= 1uF
OUT
V
ON
2V/DIV
I
OUT
100mA/DIV
V
OUT
(SHORTED
TO GND)
20uS/DIV
Figure 21. Current Limit Response Time
Note 3: V
signal forces the device to go into overcurrent condition.
DRV
8
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FPF2000-FPF2007 Rev. D
Current Limiting
Description of Operation
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 cur-
rent 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 cur-
rent state until the ON pin is deactivated or the thermal shut-
down 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, under-
voltage lockout and thermal shutdown. The current limit is pre-
set 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-volt-
age on VIN or a junction temperature in excess of 150°C over-
rides 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 automati-
cally 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 con-
stant 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 V
pin is larger than the V pin, large
IN
OUT
curents may flow and can cause permanent damage to the
device. FPF2000-FPF2007 is designed to control current flow
from V to V
.
IN
OUT
Under-Voltage Lockout
The under-voltage lockout turns-off the switch if the input volt-
age 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 Auto-
Restart 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 open-
Thermal Shutdown
The thermal shutdown protects the die from internally or exter-
nally generated excessive temperatures. During an over-tem-
perature condition the FLAGB is activated and the switch is
turned-off. The switch automatically turns-on again if tempera-
ture of the die drops below the threshold temperature.
drain MOSFET which requires a pull-up resistor between V
IN
and FLAGB. During shutdown, the pull-down on FLAGB is dis-
abled to reduce current draw from the supply.
Ordering Information
Current Limit
Auto-Restart
Current Limit
[mA]
Blanking Time
[ms]
Time
[ms]
ON Pin
Activity
Part
Top Mark
200
FPF2000
FPF2001
FPF2002
FPF2003
FPF2004
FPF2005
FPF2006
FPF2007
50
50
10
10
10
0
80
80
Active HI
Active LO
Active HI
Active HI
Active HI
Active LO
Active HI
Active HI
201
50
NA
NA
80
202
50
203
100
100
100
100
10
10
10
0
204
80
205
NA
NA
206
207
9
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FPF2000-FPF2007 Rev. D
Application Information
Typical Application
LOAD
V
V
OUT
IN
R1 = 100KΩ
C2 = 0.1µF
FPF2000 - FPF2007
Battery
1.8V-5.5V
R2 = 499Ω
OFF ON
C1 = 10µF
ON
FLAGB
GND
Over Current Blanking Time, t
power dissipated is,
, so that the maximum
Input Capacitor
BLANK
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
tBLANK
P(max) = --------------------------------------------------x(VIN(max))xILIM(max)
tRESTART + tBLANK
between V and GND. A 0.1µF ceramic capacitor, C , placed
IN
IN
10
80 + 10
close to the pins is usually sufficient. Higher values of C can
be used to further reduce the voltage drop.
IN
------------------- × 5.5 × 0.2 = 1.22mW
=
(3)
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 shut-
down threshold. Once this temperature has been reached, tog-
gling 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 V
and
OUT
GND. This capacitor will prevent parasitic board inductances
from forcing V below GND when the switch turns-off. For the
OUT
FPF2000-FPF2002 and the FPF2004-FPF2006, the total output
capacitance needs to be kept below 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,
a
ILIM(max) × tBLANK(min)
COUT = -------------------------------------------------------------------
(1)
VIN
Due to the integral body diode in the PMOS switch, a C
Board Layout
IN
greater than C
is highly recommended. A C
greater than
OUT
OUT
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 opera-
C
can cause V
to exceed V when the system supply is
IN
OUT IN
removed. This could result in current flow through the body
diode from V to V
.
IN
OUT
tion. Using wide traces for V , V
mize parasitic electrical effects along with minimizing the case
to ambient thermal impedance.
and GND will help mini-
Power Dissipation
IN
OUT
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,
P = (ILIM)2 × RDS = (0.2)2 × 0.7 = 28mW
(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 dissi-
pation will scale by the Auto-Restart Time, t
, and the
RESTART
10
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FPF2000-FPF2007 Rev. D
Dimensional Outline and Pad Layout
SYMM
C
L
0.65
2.00±0.20
A
.5 min
B
5
4
3
1.9
1.25±0.10
1
0.4 min
0.30
0.15
(0.25)
1.30
0.65
LAND PATTERN RECOMMENDATION
SEE DETAIL A
M
0.10
A B
1.30
1.00
0.80
1.10
0.80
0.10
C
0.10
0.00
C
(0.43)
Seating Plane
2.10±0.10
GAGE PLANE
0.20
R0.10
0.25
0.10
0°-30°
0.45
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.
11
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FPF2000-FPF2007 Rev. D
12
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FPF2000-FPF2007 Rev. D
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