FPF2108 Fairchild Semiconductor, FPF2108 Datasheet

IC LOAD SWITCH ADVANCED SOT23-5

FPF2108

Manufacturer Part Number
FPF2108
Description
IC LOAD SWITCH ADVANCED SOT23-5
Manufacturer
Fairchild Semiconductor
Series
IntelliMax™r
Type
High Side Switchr
Datasheet

Specifications of FPF2108

Number Of Outputs
1
Rds (on)
160 mOhm
Internal Switch(s)
Yes
Current Limit
400mA
Voltage - Input
1.8 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Switch Type
Low Side
Power Switch Family
FPF2108
Input Voltage
1.8 to 5.5V
Output Current
400mA
Mounting
Surface Mount
Package Type
SOT-23
Operating Temperature (min)
-40C
Operating Temperature Classification
Automotive
Pin Count
5
Power Dissipation
667mW
On State Resistance
0.125ohm
On / Enable Input Polarity
Active Low
Power Dissipation Pd
667mW
No. Of Outputs
1
Internal Switch
No
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Part Number
Manufacturer
Quantity
Price
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FPF2108
Manufacturer:
FAIRCHILD
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©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 FPF2108

FPF2108 Summary of contents

Page 1

... 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. ...

Page 2

... V IN UVLO ON THERMAL SHUTDOWN Pin Configuration Pin Description Pin Name GND FLAGB 5 V OUT FPF2108-FPF2110 Rev. E CONTROL LOGIC CURRENT LIMIT OUT GND 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 ...

Page 3

... ON Input Logic High Voltage ON Input Logic Low Voltage ON Input Leakage Off Switch Leakage FLAGB Output Logic Low Voltage FLAGB Output High Leakage Current Protections Current Limit Thermal Shutdown Under Voltage Shutdown Under Voltage Shutdown Hysteresis FPF2108-FPF2110 Rev. E HBM MM IN Symbol Conditions 0mA V ...

Page 4

... OUT V Fall Time OUT Over Current Blanking Time Short Circuit Response Time Note 1: Package power dissipation on 1square inch pad copper board. Note 2: Applicable only to FPF2108. Latchoff current does not include current flowing into FLAGB. FPF2108-FPF2110 Rev. E Symbol Conditions 500Ω 0.1µF ...

Page 5

... Figure 3. I Current vs. Temperature SHUTDOWN 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (V) Figure 5. Reverse Current vs. V FPF2108-FPF2110 Rev. E 150 130 110 -40 4 4.5 5 5.5 6 2000 I_SWOFF V = 5.5V 1500 IN 1000 500 ...

Page 6

... T , JUNCTION TEMPERATURE ( J Figure 9. R vs. Temperature (ON) 100 I = 10mA LOAD (OFF) OFF (ON) 10 -40 - JUNCTION TEMPERATURE ( J Figure 11 OFF FPF2108-FPF2110 Rev. E 700 600 500 400 300 200 100 -40 1.8 2.1 2.4 2.7 3 (V) 1.4 1.2 1 0.8 0 5.5V IN 0 1000 I LOAD V CC 100 ...

Page 7

... Figure 15 10µ 0.1µ DIV OUT Active High Devices I OUT 5A/DIV V OUT 2V/DIV 20µS/DIV Figure 17. Short Circuit Response Time (Output Shorted to GND) FPF2108-FPF2110 Rev DRV 2V/DIV V OUT 2V/DIV I OUT 200mA/DIV V FLAGB 2V/DIV signal forces the device to go into overcurrent condition.) ...

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

... IN 150°C overrides the ON control to turn off the switch. For FPF2108, the ON pin must be toggled to turn on the switch again. The FPF2109 and FPF2110 do not turn off in response to a over current condition but instead remain operating in a constant current mode so long active and the thermal shutdown or under-voltage lockout have not activated ...

Page 10

... Using wide traces for V IN minimize parasitic electrical effects along with minimizing the case to ambient thermal impedance. FPF2108-FPF2110 Rev FPF2108 - FPF2110 ON FLAGB GND , must IN can be IN and OUT ...

Page 11

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

Page 12

... Definition of Terms Datasheet Identification Product Status Advance Information Formative / In Design Preliminary First Production No Identification Needed Full Production Obsolete Not In Production FPF2108-FPF2110 Rev. E FPS™ PDP SPM™ F-PFS™ Power-SPM™ ® FRFET PowerTrench SM Global Power Resource Programmable Active Droop™ ...

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