FPF2501.pdf 데이터시트 (총 13 페이지) - 파일 다운로드 FPF2501 데이타시트 다운로드

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February 2007
FPF2500-FPF2506
IntelliMAX™ Advanced Load Management Products
tm
Features
„ 4.5 to 20V Input Voltage Range
„ Controlled Turn-On
„ 0.4A, 0.8A and Adjustable Current Limit Option
„ Undervoltage Lockout
„ Thermal Shutdown
„ <10uA Shutdown Current
„ Auto Restart
„ Fault Blanking
Applications
„ PDAs
„ Motor Drivers
„ Cell Phones
„ Digital Cameras
„ RoHS Compliant
General Description
The FPF2500 through FPF2506 is a family of load switches
which provide full protection to systems and loads which may
encounter large current conditions. These devices contain a
0.23current-limited N-channel MOSFET which can operate
over an input voltage range of 4.5-20V. 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 FPF2500, FPF2501,
FPF2503 and FPF2505, if the constant current condition still
persists after 5ms, these parts will shut off the switch and, for
the FPF2503 and FPF2505, the fault signal pin (FLAGB) will be
pulled low. The FPF2500, FPF2503, and FPF2505, have an
auto-restart feature which will turn the switch on again after
640ms if the ON pin is still active. The FPF2501 does not have
this auto-restart feature so the switch will remain off until the ON
pin is cycled. For the FPF2502, FPF2504 and FPF2506, 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 FPF2500
through FPF2502, the minimum current limit is adjustable from
500mA to 2A. For the FPF2503 and FPF2504 the minimum
current is internally fixed at 400mA while that for the FPF2505
and FPF2506 is internally fixed at 800mA.
These parts are available in a space-saving 5 pin SOT23
package.
Ordering Information
Part
FPF2500
FPF2501
FPF2502
FPF2503
FPF2504
FPF2505
FPF2506
Current Limit [A]
Adjustable (0.5-2.0 +/-30%)
Adjustable (0.5-2.0 +/-30%)
Adjustable (0.5-2.0 +/-30%)
0.4/0.6/0.8
0.4/0.6/0.8
0.8/1.2/1.6
0.8/1.2/1.6
Current Limit
Blanking Time
[ms]
2.5/5/10
2.5/5/10
0
2.5/5/10
0
2.5/5/10
0
Auto-Restart
Time
[ms]
320/640/1280
NA
NA
320/640/1280
NA
320/640/1280
NA
Fault Pin
No
No
No
Yes
Yes
Yes
Yes
©2007 Fairchild Semiconductor Corporation
FPF2500-FPF2506 Rev. D4
1
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Typical Application Circuit
OFF ON
5.5V max
VIN VOUT
FPF2500-FPF2502
ON ISET
GND
TO LOAD
VIN VOUT
FPF2503- FPF2506
5.5V max
TO LOAD
-
OFF ON ON FLAGB
5.5V max
GND
Functional Block Diagram
VIN
UVLO
ON
THERMAL
SHUTDOWN
CONTROL
LOGIC
CURRENT
LIMIT
FPF2500, FPF2501, FPF2502
VIN
UVLO
ON CONTROL
LOGIC
THERMAL
SHUTDOWN
FPF2503, FPF2504
FPF2505, FPF2506
CURRENT
LIMIT
VOUT
ISET
GND
VOUT
FLAGB
FPF2500-FPF2506 Rev. D4
GND
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Pin Configuration
VOUT 1
5 VIN
GND 2
FLAGB/ISET 3
4 ON
SOT23-5
Pin Description
Pin Name
1 VOUT
2 GND
FLAGB
3
ISET
4 ON
5 VIN
Function
Switch Output: Output of the power switch
Ground
Fault Output (FPF2503-FPF2506): Active LO, open drain output which indicates on over
current supply under voltage or over temperature state.
Adjustable Current Limit Setting Resistor (FPF2500-FPF2502): An external resistor
connected between this pin and ground sets the current limit value.
ON Control Input:
Supply Input: Input to the power switch and the supply voltage for the IC
Absolute Maximum Ratings
Parameter
VIN, VOUT, to GND
ON, FLAGB, ISET to GND
Power Dissipation @ TA=25°C (Note 1)
Operating Temperature Range
Storage Temperature
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Protection
HBM
MM
Min.
-0.3
-0.3
-40
-65
2000
200
Max.
20
5.5
667
125
150
150
Unit
V
V
mW
°C
°C
°C/W
V
V
Recommended Operating Range
Parameter
VIN
Ambient Operating Temperature, TA
Min.
4.5
-40
Max.
20
85
Unit
V
°C
Electrical Characteristics
VIN = 4.5 to 20V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 12V and TA = 25°C.
Parameter
Symbol
Conditions
Min. Typ.
Basic Operation
Operating Voltage
Quiescent Current
Shutdown Current
Latch-Off Current
On-Resistance
VIN
IQ
ISHDN
ILATCHOFF
RON
IOUT = 0mA, VIN = 12V, Von=5V
FPF2501
TA = 25°C, IOUT = 50mA
TA = -40 to +85°C, IOUT = 50mA
4.5
60
45
230
300
Max.
20
100
1
320
Unit
V
µA
µA
µA
m
FPF2500-FPF2506 Rev. D4
3
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Electrical Characteristics Cont.
.VIN = 4.5 to 20V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 12V and TA = 25°C
Parameter
Symbol
Conditions
Min. Typ.
Max.
ON Input Logic High Voltage
ON Input Logic Low Voltage
ON Input Leakage
VIH
VIL
Off Switch Leakage
FLAGB Output Logic Low Voltage
ISWOFF
FLAGB Output High Leakage Current
Protections
VIN = 4.5V to 20V
VIN = 4.5V to 20V
VON = 5V or GND
VON = 0V, VOUT = 0V
VIN = 5V, ISINK = 10mA
VIN = 5V, Switch on
0.9
0.4
-1 1
0.01
0.1 0.2
1
FPF2503
FPF2504
400 600 800
Current Limit
ILIM TA=25 °C
FPF2505
FPF2506
FPF2500
FPF2501
FPF2502
800 1200 1600
0.7xINOM 1.0xINOM 1.3xINOM
Thermal Shutdown
Under Voltage Shutdown
UVLO
Under Voltage Shutdown Hysteresis
TJ Increasing
TJ Decreasing
VIN Increasing
140
130
3.75 3.85 4.00
100
Dynamic
Turn on time
Turn off time
VOUT Rise Time
VOUT Fall Time
Over Current Blanking Time
tON
tOFF
tR
tF
tBLANK
RL=500, CL=1uF
RL=500, CL=1uF
RL=500, CL=1uF
RL=500, CL=1uF
FPF2500, FPF2501, FPF2503,
FPF2505
1
0.1
3
1.5
2.5 5
10
Auto-Restart Time
Short Circuit Response Time
tRESTART
FPF2500, FPF2503, FPF2505
VIN = 12V, VON = 5V
Moderate Overcurrent Condition
320 640 1280
3
Unit
V
V
µA
µA
V
µA
mA
°C
°C
V
mV
ms
ms
ms
ms
ms
ms
µs
Note 1: Package power dissipation on 1square inch pad, 2 oz. copper board.
FPF2500-FPF2506 Rev. D4
4
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Typical Characteristics
80
VON = 5V
75
70
65
60
55
50
4 6 8 10 12 14 16 18 20
SUPPLY VOLTAGE (V)
Figure 1. Quiescent Current vs. Input Voltage
80
75
VIN = 20V
70
65
60 VIN = 12V
55
50 VIN = 4.5V
45
40
-40
-15 10 35 60
TJ, JUNCTION TEMPERATURE (oC)
Figure 2. Quiescent Current vs. Temperature
85
8.0
I_SHDN
7.5
7.0 VIN = 20V
6.5
6.0
5.5
5.0 VIN = 12V
4.5
4.0
-40 -15 10 35 60
TJ, JUNCTION TEMPERATURE (oC)
Figure 3. ISHUTDOWN Current vs. Temperature
85
0.036
I_SWOFF
0.032
0.028
0.024
0.02
VIN = 20V
VIN = 12V
0.016
-40 -15 10 35 60
TJ, JUNCTION TEMPERATURE (oC)
Figure 4. ISWITCH-OFF Current vs. Temperature
85
0.80
0.75
0.70
320
VIN = 12V
300
280
260
0.65
240
0.60
0.55
220
200
180
0.50
160
4 6 8 10 12 14 16 18 20
-40
VIN, Input Voltage (V)
Figure 5. VIH vs. VIN
-15 10 35 60
TJ, JUNCTION TEMPERATURE (oC)
Figure 6. R(ON) vs. Temperature
85
FPF2500-FPF2506 Rev. D4
5
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