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FPF3040 Datasheet

18V-Rated Dual Input Single Output Power-Source-Selector Switch

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Table 1.
Truth Table
EN VIN>UVLO VBUS>UVLO VIN_SEL
HIGH
X
X LOW
HIGH
LOW
X
YES
X HIGH
NO HIGH
DF_IN
X
X
X
Other_VIN_AVA
HI-Z if VIN & VBUS >UVLO
LOW if VIN or VBUS
<UVLO
HI-Z if VIN & VBUS >UVLO
LOW if VIN or VBUS
<UVLO
LOW
LOW
NO
YES
LOW
X
LOW
LOW YES
YES LOW Floating
HIGH
LOW YES
YES HIGH LOW
HIGH
LOW
NO
NO X
Notes:
1. Internal pull-down at EN.
2. 1 µA pull-up current source at DF_IN.
X
LOW
VOUT
VBUS
VIN
VIN
VBUS
VBUS
VIN
Floating
Comment
VOUT is selected by
VIN_SEL
Bi-directional channel
Automatic selection to
valid input
VIN_SEL is output.
VOUT is selected by
DF_IN
VIN_SEL is output.
OFF
Absolute Maximum Ratings
Stresses exceeding the Absolute Maximum Ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameters
Min. Max. Unit
VPIN
VIN, VBUS to GND
VOUT to GND(3)
Continuous
Pulsed, 100 ms Maximum Non-Repetitive
EN, DF_IN, VIN_SEL, Other_VIN_AVA to GND
ISW Maximum Continuous Switch Current per Channel
-1.4
18
-2.0
-0.3 16.0
-0.3 6.0
2
V
A
tPD Total Power Dissipation at TA=25°C
2.25 W
TJ Operating Junction Temperature
-40 +150 °C
TSTG Storage Junction Temperature
JA Thermal Resistance, Junction-to-Ambient (1in. Square Pad of 2 oz. Copper)
-65 +150 °C
55(4) °C/W
Human Body Model, JESD22-A114
3
ESD
Electrostatic Discharge
Capability
Charged Device Model, JESD22-C101
IEC61000-4-2 Air Discharge (VIN, VBUS to GND)
System Level(5) Contact Discharge (VIN, VBUS to GND)
1.5
15
8
kV
Notes:
3. If external voltage of more than 10.5 V is applied to VOUT, the slew rate should be less than 1 V/ms from 10.5 V.
4. Measured using 2S2P JEDEC standard PCB.
5. System level ESD can be guaranteed by design.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
VPIN
TA
VIN
VBUS
Ambient Operating Temperature
Parameters
Min.
4.0
4.0
-40
Max.
10.5
6.5
+85
Unit
V
°C
© 2012 Fairchild Semiconductor Corporation
FPF3040 Rev. 2.4.3
5
www.fairchildsemi.com
Fairchild Semiconductor
Fairchild Semiconductor



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