Fairchild Semiconductor’s Boost Switch Delivers High Efficiency in High-Frequency Step-Up DC-DC Designs
September 29 2009 - 11:00AM
Business Wire
Fairchild Semiconductor (NYSE: FCS) brings designers of cell
phones, medical, portable and consumer applications a boost switch
that provides high efficiency in boost conversion circuits. The
FDFME3N311ZT combines a 30V integrated N-Channel PowerTrench®
MOSFET and Schottky diode for exceptionally low input capacitance
(55pF typical) and total gate charge (1nC) to improve efficiency in
DC-DC boost designs. Designed with Fairchild’s proprietary
PowerTrench process technology, it delivers low switching losses
through the careful optimization of dynamic characteristics. Its
Schottky diode has low reverse leakage current over temperature to
prevent a lowering of the converter efficiency as the package
temperature rises. The FDFME3N311ZT integrates two discrete devices
into a compact (1.6mm x 1.6mm) and low-profile (0.55mm) MicroFET™
thin package, answering the need for compact DC-DC boost designs
and offering a 36 percent space savings over prior boost switch
products.
In applications such as cell phones, the FDFME3N311ZT offers a
30V breakdown voltage to drive up to seven or eight white LEDs,
depending on the LEDs selected and design guardband. White LEDs are
typically used for display backlighting in mobile devices such as
cell phones, and are normally connected in a series path to ensure
a uniform forward current and brightness for each LED. With each
white LED having a forward voltage of around 3-3.5V, this boost
switch is instrumental in “stepping-up” the available battery
voltage and in most cases, a single cell lithium type.
This boost switch is another addition to Fairchild’s broad
MOSFET portfolio. This portfolio offers a wide range of breakdown
voltages (20V-1000V) and cutting-edge packaging technologies to
solve the complex power and space challenges of today’s
designs.
Price (each, 1k pcs.): $0.25
Availability: Samples available now
Delivery: 8 – 12 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.
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) is a global leader
delivering energy-efficient power analog and power discrete
solutions. Fairchild is The Power Franchise®, providing
leading-edge silicon and packaging technologies, manufacturing
strength and system expertise for consumer, communications,
industrial, portable, computing and automotive systems. An
application-driven, solution-based semiconductor supplier,
Fairchild provides online design tools and design centers worldwide
as part of its comprehensive Global Power ResourceSM. Please
contact us on the web at www.fairchildsemi.com.
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