Fairchild Semiconductor’s Dynamic Voltage Scaling Buck Regulator Saves Power in Lithium Ion Battery Devices
October 13 2010 - 11:01AM
Business Wire
Consumer demand is driving the need for cell phone designers and
chipset reference design firms to offer more multimedia
functionality in their devices, resulting in heavy core processor
demands, which in turn pushes the need for power reduction
techniques such as dynamic voltage scaling (DVS). Fairchild
Semiconductor’s (NYSE: FCS) FAN5365, a 6MHz, 800mA/1A, digitally
programmable Buck regulator, provides excellent dynamics, high
efficiency and a small footprint, making it an ideal complimentary
piece to the PMIC in a system engineer’s design.
The FAN5365, available in a 1.27mm by 1.29mm, 9-bump WLCSP
package is the smallest 6MHz DVS buck regulator currently available
and is up to 40 percent smaller than previous solutions, making it
the best choice for powering core processors in single cell lithium
ion (Li-Ion) battery devices such as smartphones, ultra-mobile PCs,
tablets and wireless broadband hot spots.
The device offers excellent transient response while consuming
low 40µA quiescent current in light-load efficiency enhancing PFM
mode. For heavier loads, the regulator will automatically switch to
a fixed frequency 6MHz PWM mode, allowing designers to use low cost
and compact chip inductors and capacitors. The FAN5365 supports up
to 800mA or 1A load currents and also offers a pin-selectable or
I2C Bus® interface programmable output voltage, adjustable from
0.75V to 1.975V in 12.5mV increments.
Additionally, the FAN5365 supports an extended Li-Ion battery
range from 2.3V to 5.5V and offers advanced protection features
including short-circuit current limit protection, thermal
protection and under voltage lock out.
The FAN5365 is part of Fairchild’s comprehensive portfolio of
DVS Buck converters, which enable engineers to drive innovation in
their designs by integrating functionality, improving performance
and reducing device size as well as overall component count.
Price: US $.57 in 1,000 quantity pieces
Availability: Samples available now
Delivery: 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.
Note to Editor: For a datasheet in PDF format, please go
to:
http://www.fairchildsemi.com/ds/FA/FAN5365.pdf
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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