Load Switches simplify complex power design challenges.
July 29, 2010 -
IntelliMAX(TM) FPF1038/FPF1039 help designers reduce in-rush current when switch is used to disconnect loads with output capacitances above 100 µF. Specifically, slew-rate controlled turn-on characteristics with TR=2.7 mS prevent voltage droop on supply rails with bulk capacitances as large as 200 µF. Slew-rate controlled low-impedance MOSFET switch (21 mW typ) joins features such as less than 1 µA consumption, load discharge path, ESD protection, and GPIO/CMOS compatible-enable circuitry.
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Original Press release
Fairchild Semiconductor
3001 Orchard Parkway
San Jose, CA, 95134
USA
Fairchild Semiconductor's IntelliMAX(TM) Load Switches Simplify Complex Power Design Challenges
Eliminates External Components in Consumer, Mobile and Industrial Applications
SAN JOSE, Calif. - 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 (21mW typical) and other features useful in embedded applications: ultra-low power consumption (<1µA), load discharge path, ESD protection, GPIO/CMOS compatible-enable circuitry. The devices also features a 1.2V to 5.5V input voltage operating range which aligns with supply rails for the latest embedded processors, custom ASICs, and FPGAs used in these applications. The optimized slew-rate controlled turn-on characteristics with TR=2.7mS prevent voltage droop on supply rails with bulk capacitances as large as 200µF.
The FPF1038 / FPF1039 expands Fairchild's IntelliMAX(TM) portfolio to address the more dynamic power challenges of light industrial applications. The devices integrate functionality normally achieved through multi-chip solutions thereby providing designers off-the-shelf capability for their design needs, while reducing component count and increasing efficiency. Demonstration boards are available, by request only, from local Fairchild Semiconductor Sales Representatives.
Price: US $.60 in 1,000 quantity pieces
Availability: samples available now
Delivery: 8-10 weeks ARO
Contact Information:
To contact Fairchild Semiconductor about this product, please go to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales contacts, please visit: http://www.fairchildsemi.com.
For a datasheet in PDF format, please go to:
http://www.fairchildsemi.com/ds/FP/FPF1038.pdf
http://www.fairchildsemi.com/ds/FP/FPF1039.pdf
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About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) - global presence, local support, smart ideas. Fairchild delivers energy-efficient, easy-to-use and value-added semiconductor solutions for power and mobile designs. We help our customers differentiate their products and solve difficult technical challenges with our expertise in power and signal path products. Please contact us on the web at www.fairchildsemi.com.
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