FPF2174 Fairchild Semiconductor, FPF2174 Datasheet - Page 10

• Manufacturer Part Number: FPF2174
• Description: IC LOAD SWITCH ADVANCED 6MLP 3X3
• Manufacturer: Fairchild Semiconductor
• Series: IntelliMax™r
• Type: High Side Switchr

Specifications of FPF2174

• Number Of Outputs: 1
• Rds (on): 125 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
• Input Voltage: 5.5V
• On / Enable Input Polarity: Active High
• Power Dissipation Pd: 1.4W
• No. Of Outputs: 1
• Internal Switch: No
• Distribution Switch Case Style: MLP
• No. Of Pins: 6
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FPF2174TR

FPF2174 Rev. F
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
close to the pins is usually sufficient. Higher values of C
be used to further reduce the voltage drop.
Output Capacitor
A 0.1uF 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 be typically,
When using the part, attention must be given to the manual
resetting of the part. Continuously resetting the part at a high
duty cycle when a short on the output is present can cause the
temperature of the part to increase. The junction temperature
will only be allowed to increase to the thermal shutdown
threshold. Once this temperature has been reached, toggling
ON will not turn-on the switch until the junction temperature
drops.
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
5.5V
P
=
I
IN
LIM
and GND. A 4.7 F ceramic capacitor, C
OUT
×
V
below GND when the switch turns-off.
DROP
OUT
, should be placed between V
C1 = 4.7 F
=
0.4 0.4
OFF ON
×
IN
, V
=
OUT
5.5V MAX
160mW
and GND will help
IN
OUT
, placed
V
ON
IN
IN
and
can
(2)
10
FPF2174
GND
FLAGB
V
OUT
R1 = 100K
C2 = 0.1 F
To Load
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