FPF2108NL Fairchild Semiconductor, FPF2108NL Datasheet

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FPF2108NL

Manufacturer Part Number
FPF2108NL
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FPF2108NL

Switch Type
Low Side
Power Switch Family
FPF2108
Input Voltage
1.8 to 5.5V
Output Current
400mA
Number Of Outputs
Single
Mounting
Surface Mount
Package Type
SOT-23
Operating Temperature (min)
-40C
Operating Temperature (max)
125C
Operating Temperature Classification
Automotive
Pin Count
5
Power Dissipation
667mW
Lead Free Status / Rohs Status
Compliant
©2008 Fairchild Semiconductor Corporation
FPF2108-FPF2110 Rev. E
FPF2108-FPF2110
IntelliMAX™ Advanced Load Management Products
Features
Applications
Typical Application Circuit
Ordering Information
1.8 to 5.5V Input Voltage Range
Controlled Turn-On
200mA and 400mA Current Limit Options
Undervoltage Lockout
Thermal Shutdown
<2µA Shutdown Current
Fast Current limit Response Time
Reverse Current Blocking
Fault Blanking
RoHS Compliant
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
3µs to Moderate Over Currents
20ns to Hard Shorts
FPF2108
FPF2109
FPF2110
Part
Current Limit
[mA]
OFF ON
400
200
400
Blanking Time
Current Limit
[ms]
V
ON
FPF2108 - FPF2110
10
IN
0
0
1
GND
General Description
The FPF2108-FPF2110 is a series of load switches which
provides full protection to systems and loads which may
encounter large current conditions. This devices contain a
0.125Ω current-limited P-channel MOSFET which can operate
over an input voltage range of 1.8-5.5V. Internally, reverse
current blocking prevents current from flowing when the
MOSFET is off and the output voltage is higher than the input
voltage. Switch
interfacing directly with low voltage control signals. Each part
contains thermal shutdown protection which shuts off the switch
to prevent
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.
constant current condition still persists after 10ms, the part will
shut off the switch and pull the fault signal pin (FLAGB) low. The
switch will remain off until the ON pin is cycled. For the
FPF2109 and FPF2110, 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
FPF2109 while that for the FPF2108 and FPF2110 is 400mA.
These parts are available in a space-saving 5 pin SOT23
package.
Auto-Restart
FLAGB
V
OUT
Time
[ms]
NA
NA
NA
damage to the part when a continuous over-current
control is by a logic input (ON) capable of
Activity
Active LO
ON Pin
Active HI
Active HI
For the FPF2108, if the
TO LOAD
August 2008
Top Mark
www.fairchildsemi.com
2108
2109
2110
tm

Related parts for FPF2108NL

FPF2108NL Summary of contents

Page 1

... FPF2108 400 FPF2109 200 FPF2110 400 ©2008 Fairchild Semiconductor Corporation FPF2108-FPF2110 Rev. E General Description The FPF2108-FPF2110 is a series of load switches which provides full protection to systems and loads which may encounter large current conditions. This devices contain a 0.125Ω current-limited P-channel MOSFET which can operate over an input voltage range of 1 ...

Page 2

... FLAGB ON SOT23-5 Function Supply Input: Input to the power switch and the supply voltage for the IC Ground ON Control Input Fault Output: Active LO, open drain output which indicates an over current supply, under voltage or over temperature state. Switch Output: Output of the power switch ...

Page 3

... 1. 5. GND 0V SWOFF ON OUT 10mA IN SINK V = 1.8V 10mA IN SINK V = 5V, Switch on IN FPF2109 V = 3.3V LIM V = 3.0V FPF2108, FPF2110 OUT Shutdown Threshold Return from Shutdown Hysteresis UVLO V Increasing IN 3 Min. Max. Unit -0.3 6 667 mW -40 125 -65 150 150 °C/W 4000 ...

Page 4

Electrical Characteristics Cont 1.8 to 5.5V -40 to +85°C unless otherwise noted. Typical values are Parameter Dynamic Turn on time Turn off time V Rise Time OUT V Fall Time OUT Over ...

Page 5

... Figure 4. I 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -40 4.0 4.5 5.0 5.5 6.0 OUT 5. 3. 1. TJ, JUNCTION TEMPERATURE ( C) Figure 2. Quiescent Current vs. Temperature 3. JUNCTION TEMPERATURE ( C) J Current vs. Temperature SWITCH-OFF JUNCTION TEMPERATURE ( C) J Figure 6. Reverse Current vs. Temperature www.fairchildsemi.com 3. ...

Page 6

Typical Characteristics 700 600 FPF2108, FPF2110 500 400 300 FPF2109 200 100 0 0.3 0.6 0.9 1.2 1 OUT Figure 7. Current Limit vs. Output Voltage 200 180 160 V = 1.8V IN 140 V = 3.3V ...

Page 7

... DRV V ON 2V/DIV I OUT 10mA/DIV Response 2V/DIV I OUT 200mA/DIV 7 5mS/DIV Figure 14. T Response BLANK R = 500Ω 0.1µ Active High Devices 200nS/DIV Figure 16. T Response OFF Active High Devices 50µS/DIV Figure 18. Current Limit Response (Switch power up to hard short) www.fairchildsemi.com ...

Page 8

Typical Characteristics Active High Devices V IN 2V/DIV V ON 2V/DIV I OUT 200mA/DIV 50µS/DIV Figure 19. Current Limit Response Time (Output Shorted to GND by 10Ω, moderate short) FPF2108-FPF2110 Rev www.fairchildsemi.com ...

Page 9

... 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. ...

Page 10

... OFF 4.7µF Input Capacitor 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 V and GND. A 4.7µF ceramic capacitor placed close to the V pin ...

Page 11

Dimensional Outline and Pad Layout FPF2108-FPF2110 Rev www.fairchildsemi.com ...

Page 12

... TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidianries, and is not intended exhaustive list of all such trademarks. Build it Now™ CorePLUS™ CorePOWER™ CROSSVOLT™ CTL™ Current Transfer Logic™ ...

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