Fairchild Semiconductor’s IntelliMAX™ Load Switches Simplify Complex Power Design Challenges
July 14 2010 - 11:01AM
Business Wire
Designers of higher-complexity consumer applications like
set-top boxes, ultra-mobile PCs, mobile internet devices and eBooks
need a power switch solution that can handle the battery management
and green energy challenges associated with the higher load
currents, lower supply voltages, larger batteries and more dynamic
operating conditions found in these applications.
Fairchild Semiconductor’s (NYSE: FCS) FPF1038 / FPF1039 advanced
load management switches provide a monolithic, one-chip solution to
the designers’ challenge of reducing in-rush current, or high
di/dt, when a switch is used to disconnect loads with high
(>100µF) output capacitances. If the load is connected directly
to a battery or power supply using a conventional MOSFET/discrete
solution, the tolerances of discrete components can create
conditions where excessive droop can cause voltage rails to go out
of regulation as the switch turns on and draws large currents. The
FPF1038 / FPF1039 prevents this from occurring by integrating the
necessary functionality into one chip, requiring less board space,
reducing part counts, eliminating tolerance matching issues and
additional design time to compensate the circuitry.
The FPF1038 / FPF1039 integrates a slew-rate controlled
low-impedance MOSFET switch (21mΩ typical) and other features
useful in embedded applications: ultra-low power consumption (
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