FPF2140 Fairchild Semiconductor, FPF2140 Datasheet

IC LOAD SWITCH REV CURR BK 6-MLP

FPF2140

Manufacturer Part Number
FPF2140
Description
IC LOAD SWITCH REV CURR BK 6-MLP
Manufacturer
Fairchild Semiconductor
Type
High Side Switchr
Datasheet

Specifications of FPF2140

Number Of Outputs
1
Rds (on)
160 mOhm
Internal Switch(s)
Yes
Current Limit
200mA
Voltage - Input
1.8 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
6-MLP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
FPF2140TR
©2007 Fairchild Semiconductor Corporation
FPF2140/42/43/44/46/47 Rev. D
FPF2140/42/43/44/46/47
Full Function Load Switch with Reverse Current Blocking
Features
Applications
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
Auto Restart
Fast Current limit Response Time
Fault Blanking
Reverse Current Blocking
Power Good Function
RoHS Compliant
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
5µs to Moderate Over Currents
30ns to Hard Shorts
FPF2140
FPF2142
FPF2143
FPF2144
FPF2146
FPF2147
Part
Current Limit
200/300/400
200/300/400
200/300/400
400/600/800
400/600/800
400/600/800
BOTTOM
[mA]
Pin 1
Blanking Time
Current Limit
15/30/60
15/30/60
15/30/60
15/30/60
[ms]
0
0
1
General Description
The FPF2140/42/43/44/46/47 is a series of load switches which
provides full protection to systems and loads which may
encounter large current conditions. These devices contain a
0.12Ω current-limited P-channel MOSFET which can operate
over an input voltage range of 1.8-5.5V. Internally, current is
prevented from flowing when the MOSFET is off and the output
voltage is higher than the input voltage. 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 FPF2140/42/44/46, if
the constant current condition still persists after 30ms, the part
will shut off the switch and pull the fault signal pin (FLAGB) low.
The FPF2140/44 have an auto-restart feature which will turn the
switch on again after 450ms if the ON pin is still active. The
FPF2142/46 do not have this auto-restart feature so the switch
will remain off until the ON pin is cycled. For the FPF2143/47, 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 FPF2140/42/43 while that for the
FPF2144/46/47 is 400mA.
These parts are available in a space-saving 6 pin 2X2 MLP
package.
Auto-Restart
225/450/900
225/450/900
Time
[ms]
TOP
NA
NA
NA
NA
October 2007
Activity
ON Pin
Active HI
Active HI
Active HI
Active HI
Active HI
Active HI
www.fairchildsemi.com
tm

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FPF2140 Summary of contents

Page 1

... The minimum current limit is 200mA for the FPF2140/42/43 while that for the FPF2144/46/47 is 400mA. These parts are available in a space-saving 6 pin 2X2 MLP package ...

Page 2

... Typical Application Circuit OFF ON Functional Block Diagram V IN UVLO ON THERMAL SHUTDOWN FLAGB FPF2140/42/43/44/46/47 Rev OUT FPF2140/2/3/4/6/7 FLAGB PGOOD ON GND CONTROL LOGIC CURRENT LIMIT 2 TO LOAD REVERSE CURRENT BLOCKING V OUT PGOOD GND www.fairchildsemi.com ...

Page 3

... Electrostatic Discharge Protection Recommended Operating Range Parameter V IN Ambient Operating Temperature Electrical Characteristics V = 1.8 to 5.5V -40 to +85°C unless otherwise noted. Typical values are Parameter Basic Operation Operating Voltage Quiescent Current On-Resistance FPF2140/42/43/44/46/47 Rev PGOOD 7 GND FLAGB OUT 2X2 MicroFET-6 Function Power Good output: Open drain output which indicate that output voltage has reached ...

Page 4

... R = 500Ω 0.1µ 500Ω 0.1µ 500Ω 0.1µ 500Ω 0.1µ FPF2140, FPF2142, FPF2144, t BLANK FPF2146 t FPF2140, FPF2144 RSTRT 3.3V. Moderate IN ON Over-Current Condition 3.3V. Hard Short 3.3V and T = 25° Min Typ Max Units 0.8 1 ...

Page 5

... SUPPLY VOLTAGE (V) Figure 3. V High Voltage vs. Input Voltage ON 200 190 180 170 160 150 140 130 120 110 100 SUPPLY VOLTAGE (V) IN Figure 5. R (ON) FPF2140/42/43/44/46/47 Rev. D 110 105 100 4.5 5 5.5 6 -40 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 1 ...

Page 6

... Typical Characteristics 350 300 250 200 150 100 OUT Figure 7. Current Limit vs. Output Voltage 320 FPF2140 / 315 310 305 300 295 290 -65 -40 - JUNCTION TEMPERATURE (°C) J Figure 9. Current Limit vs. Temperature 100 500 Ohm 0.1uF -40 - JUNCTION TEMPERATURE (°C) J Figure 11 vs. Temperature ...

Page 7

... I OUT 10mA/DIV V OUT 2V/DIV 100µs/DIV Figure 15. T Response 2V/DIV I OUT 5A/DIV V OUT 2V/DIV 20µs/DIV Figure 17. Short Circuit Response Time (Output shorted to GND) FPF2140/42/43/44/46/47 Rev. D 500 495 490 485 480 475 470 465 460 455 450 - 10µ 0.1µF 2V/DIV ...

Page 8

... V DRV 2V/DIV V ON 2V/DIV I OUT 500mA/DIV OUT V 2V/DIV 100ms/DIV Figure 23. T RESTART Note 2: V signal forces the device to go into overcurrent condition by loading. DRV FPF2140/42/43/44/46/47 Rev 2V/DIV V ON 2V/DIV C = 10µ OUT C = 0.1µF OUT 500mA/DIV OUT 2V/DIV = 0.1µF) ...

Page 9

... IN 140° active HI and has a low threshold making it capable of interfacing with low voltage signals. In addition, excessive currents will cause the switch to turn off for FPF2140/ 42 and FPF2144/46. The FPF2140/44 have an feature which will automatically turn the switch on again after 450ms. For the FPF2142/46, the ON pin must be toggled to turn-on the switch again ...

Page 10

... For the IN FPF2140/44, 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 and active and the short is present ...

Page 11

... The PGOOD pin status is independent of the ON pin position. This mean that PGOOD pin stays low when the load switch is OFF. If the Power Good feature is not used in the application the pin can be connected directly to GND. FPF2140/42/43/44/46/47 Rev. D Startup Power Sequence FPF2140/ ...

Page 12

... Dimensional Outline and Pad Layout FPF2140/42/43/44/46/47 Rev www.fairchildsemi.com ...

Page 13

... Datasheet Identification Product Status Advance Information Formative or In Design Preliminary First Production No Identification Needed Full Production Obsolete Not In Production FPF2140/42/43/44/46/47 Rev. D ® Green FPS™ Power247 Green FPS™ e-Series™ POWEREDGE GTO™ Power-SPM™ i-Lo™ PowerTrench IntelliMAX™ ...

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