Industry's First I2C Controlled Buck-Boost Regulator Allows "On-the-Fly" Output Voltage Programming
August 22 2011 - 10:00AM
Marketwired
Intersil Corporation (NASDAQ: ISIL) today introduced the world's
first I2C controlled buck-boost regulator, delivering a highly
flexible solution for providing a regulated output voltage from a
varying input voltage. The ISL9112 is a compact, high efficiency
2.5MHz, 1.2A buck-boost regulator designed for applications that
require I2C programmability, and utilizes Intersil's proprietary
H-Bridge Buck-Boost architecture. The I2C interface allows output
voltages to be changed instantaneously or ramped between two
values.
The ISL9112 simplifies design by providing a regulated output
voltage from an input that can be either above or below the output
voltage. The regulator minimizes external components, requiring
just a single inductor and two capacitors. It also features the
industry's lowest voltage deviation during transitions between buck
and boost modes, providing designers with flexibility in selecting
the optimal output voltage. The ISL9112's 2.5MHz switching
frequency is also the highest available in a buck-boost regulator,
further minimizing external component sizes.
The device can deliver more than 2A at 2Vout or 1.2A at 3.0Vout
from a single Li-Ion battery (the industry's highest current
capability in a tiny 3x3mm footprint). Output voltages can be
programmed down to 1.9V or up to 5.0V, which is ideal for camera
flash LED drives, RF power amplifiers and other functions with
varying supply voltage requirements.
Features and Benefits
- Input voltage as low as 1.8V (ideal for alkaline or NiMH
battery powered systems)
- Up to 95% efficiency in buck (step-down) mode
- Over-current, under-voltage and over-temperature shutdown
- Mode/Sync pin controls PFM/PWM operation and switching
frequency
- Switching frequency can be synchronized up to 3.25MHz
Pricing and Availability The ISL9112 is
available now in a compact 12-pin, 3x3mm TDFN package. Pricing
starts at $2.13 each in 1,000-piece quantities. For more
information please visit
http://www.intersil.com/products/deviceinfo.asp?pn=ISL9112.
To view a high-resolution downloadable photo, please visit
Intersil's photo room at:
http://www.intersil.com/pressroom/hr_photos/20110822_ISL9110_hr.jpg
About Intersil Intersil Corporation is a
leader in the design and manufacture of high-performance analog,
mixed-signal and power management semiconductors. The Company's
products address some of the fastest growing markets within the
communications, computing, high-end consumer and industrial
electronics markets. For more information about Intersil or to find
out how to become a member of our winning team, visit the Company's
web site and career page at www.intersil.com.
Intersil and the Intersil logo are trademarks or registered
trademarks of Intersil Corporation. All other brands, product names
and marks are or may be trademarks or registered trademarks used to
identify products or services of their respective owners.
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