Data Sheet

© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com
FPF3040 • Rev. 2.4.3 5
FPF3040 — IntelliMAX™ 18 V-Rated Dual Input Single Output Power-Source-Selector Switch
Table 1. Truth Table
EN
V
IN
>UVLO
V
BUS
>UVLO
V
IN_SEL
DF_IN
Other_V
IN_AVA
V
OUT
Comment
HIGH
X
X
LOW
X
HI-Z if V
IN
& V
BUS
>UVLO
LOW if V
IN
or V
BUS
<UVLO
V
BUS
V
OUT
is selected by
V
IN_SEL
Bi-directional channel
HIGH
X
X
HIGH
X
HI-Z if V
IN
& V
BUS
>UVLO
LOW if V
IN
or V
BUS
<UVLO
V
IN
LOW
YES
NO
HIGH
X
LOW
V
IN
Automatic selection to
valid input
V
IN_SEL
is output.
LOW
NO
YES
LOW
X
LOW
V
BUS
LOW
YES
YES
LOW
Floating
HIGH
V
BUS
V
OUT
is selected by
DF_IN
V
IN_SEL
is output.
LOW
YES
YES
HIGH
LOW
HIGH
V
IN
LOW
NO
NO
X
X
LOW
Floating
OFF
Notes:
1. Internal pull-down at EN.
2. 1 µA pull-up current source at DF_IN.
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
V
PIN
V
IN,
V
BUS
to GND
Continuous
-1.4
18
V
Pulsed, 100 ms Maximum Non-Repetitive
-2.0
V
OUT
to GND
(3)
-0.3
16.0
EN, DF_IN, V
IN_SEL
, Other_V
IN_AVA
to GND
-0.3
6.0
I
SW
Maximum Continuous Switch Current per Channel
2
A
t
PD
Total Power Dissipation at T
A
=25°C
2.25
W
T
J
Operating Junction Temperature
-40
+150
°C
T
STG
Storage Junction Temperature
-65
+150
°C

JA
Thermal Resistance, Junction-to-Ambient (1in. Square Pad of 2 oz. Copper)
55
(4)
°C/W
ESD
Electrostatic Discharge
Capability
Human Body Model, JESD22-A114
3
kV
Charged Device Model, JESD22-C101
1.5
IEC61000-4-2
System Level
(5)
Air Discharge (V
IN,
V
BUS
to GND)
15
Contact Discharge (V
IN,
V
BUS
to GND)
8
Notes:
3. If external voltage of more than 10.5 V is applied to V
OUT
, 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
Parameters
Min.
Max.
Unit
V
PIN
V
IN
4.0
10.5
V
V
BUS
4.0
6.5
T
A
Ambient Operating Temperature
-40
+85
°C