FPF1018 Fairchild Semiconductor, FPF1018 Datasheet - Page 8

• Manufacturer Part Number: FPF1018
• Description: IC LOAD SWITCH 1V ADVANCED 6ULMP
• Manufacturer: Fairchild Semiconductor
• Series: IntelliMax™r
• Type: High Side Switchr

Specifications of FPF1018

• Number Of Outputs: 1
• Rds (on): 45 mOhm
• Internal Switch(s): Yes
• Current Limit: 1.5A
• Voltage - Input: 0.8 ~ 1.8 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-UMLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FPF1015/6/7/8 Rev. D
Description of Operation
The FPF1015/6/7/8 are low R
with controlled turn-on. The core of each device is a 34mΩ
(V
a low input operating range of 0.8 to 1.8V. The ON pin controls
the state of the switch.
The FPF1016 and FPF1018 contain a 60Ω(typ) on-chip resistor
which is connected internally from V
discharge when the switch is turned off.
On/Off Control
The ON pin is active high and it controls the state of the switch.
Applying a continuous high signal will hold the switch in the ON
state. In order to minimize the switch on resistance, the ON pin
voltage should exceed the input voltage by 2V. This device is
compatible with a GPIO (General Purpose Input/Output) port,
where the logic voltage level can be configured to 4V
V
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, a capacitor must be
placed between V
especially when the operating voltage approaches 1V and a fast
slew rate part (FPF1015 and FPF1016) is selected, a 10µF
ceramic capacitor should be placed close to the V
values of C
during higher current modes of operation.
Output Capacitor
A 0.1µF capacitor, C
GND. This capacitor will prevent parasitic board inductance
from forcing V
application has a capacitive load, the FPF1016 and FPF1018
can be used to discharged that load through an on-chip output
discharge path.
IN
IN
+2V and power consumed is less than 1µA in steady state.
= 1V, V
V
IN
= 0.8-1.8V
ON
IN
OUT
can be used to further reduce the voltage drop
= 3V) N-Channel MOSFET and is customized for
below GND when the switch turns-off. If the
IN
L
and GND. For minimized voltage drop,
, should be placed between V
DS(ON)
C
IN
OUT
N-Channel load switches
to GND for quick output
OFF ON
IN
pins. Higher
≥
OUT
V
ON
and
≥
V
ON
IN
8
FPF1015/6/7/8
Timing Diagram
V
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 or large copper planes for all pins
(V
electrical effects along with minimizing the case to ambient
thermal impedance.
V
OUT
IN
ON
, V
GND
OUT
, ON and GND) will help minimize the parasitic
where:
10%
td
t
t
td
t
t
V
R
ON
F
OFF
ON
OFF
OUT
td
10%
ON
t
ON
= Delay On Time
= V
= Turn On Time
= Delay Off Time
= V
= Turn Off Time
t
90%
R
R
OUT
OUT
L
Rise Time
Fall Time
C
L
www.fairchildsemi.com
td
90%
OFF
t
OFF
90%
t
F
10%