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FPF1005-FPF1006 Rev. G

Description of Operation

switches with controlled turn-on. The core of each device is a

55mΩ P-Channel MOSFET and a controller capable of

functioning over a wide input operating range of 1.2-5.5V. The

ON pin, an active HI TTL compatible input, controls the state of

the switch. The FPF1006 contains a 120Ω on-chip load resistor

for quick output discharge when the switch is turned off.

directly to the battery source due to the discharge mechanism of

the load switch.

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 short-circuit, a capacitor needs to be placed

be used to further reduce the voltage drop during higher current

application.

Output Capacitor

GND. This capacitor will prevent parasitic board inductance

This could result in current flow through the body diode from

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

electrical effects along with minimizing the case to ambient

thermal impedance.

OFF ON

ON

GND

FPF1005/6

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