FPF2108 Fairchild Semiconductor, FPF2108 Datasheet - Page 10

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FPF2108
Manufacturer:
ROHM
Quantity:
5 000
Part Number:
FPF2108
Manufacturer:
FAIRCHILD
Quantity:
8 000
Part Number:
FPF2108
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
FPF2108-FPF2110 Rev. E
Application Information
Typical Application
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
be placed close to the V
used to further reduce the voltage drop experienced as the
switch is turned on into a large capacitive load.
Output Capacitor
A 0.1µF capacitor C
GND. This capacitor will prevent parasitic board inductances
from forcing V
Power Dissipation
During normal operation as a switch, the power dissipation is
small and has little effect on the operating temperature of the
part. The parts with the higher current limits will dissipate the
most power and that will only typically be,
When in current limit the maximum power dissipation will occur
when the output is shorted to ground. A short on the output will
cause the part to operate in a constant current state until the
thermal shutdown activates. It will then cycle in and out of
thermal shutdown so long as the ON pin is active and the short
is present.
Board Layout
For best performance, all traces should be as short as possible.
To be most effective, the input and output capacitors should be
placed close to the device to minimize the effects that parasitic
trace inductances may have on normal and short-circuit
operation. Using wide traces for V
minimize parasitic electrical effects along with minimizing the
case to ambient thermal impedance.
Battery
1.8V-5.5V
P
=
(I
IN
LIM
and GND. A 4.7µF ceramic capacitor, C
OUT
)
2
below GND when the switch turns-off.
R
OUT
DS
, should be placed between V
=
C1 = 4.7µF
IN
(0.8)
pin. A higher value of C
OFF ON
2
IN
0.125
, V
OUT
=
and GND will help
80mW
OUT
IN
IN
V
ON
FPF2108 - FPF2110
can be
, must
IN
and
10
GND
FLAGB
V
OUT
R1 = 100KΩ
C2 = 0.1µF
LOAD
www.fairchildsemi.com
R2 = 499Ω

Related parts for FPF2108