austriamicrosystems introduces micro-sized inductorless DC-DC boost converter

AS1302 delivers 30mA at 5V with up to 99% efficiency while requiring smallest
PCB space
UNTERPREMSTAETTEN, Austria--(Business Wire)--
austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of
analog ICs for communications, industrial, medical and automotive applications,
expanded its inductorless boost converter portfolio with the AS1302, an
ultrasmall inductorless DC-DC boost converter. The AS1302 is capable of output
currents as high as 30mA from a wide ranging input of 2.9 to 5.15V.

The new AS1302 offers low-noise constant frequency operation from light to
higher loads. Its unique constant-frequency architecture provides both low input
and low output ripple and its high 1.2MHz switching frequency allows the use of
extremely small external capacitors. To improve efficiency the frequency is
reduced to 49kHz during light loads. The AS1302 requires only two 220nF flying
caps and two 2.2uF bypass capacitors. Combined with the small size of the
WL-CSP-8 package, this creates an extremely compact solution for
space-constrained applications.

Providing a regulated output, the AS1302 is ideally suited for a variety of
applications such as 2-3 AA cells alkaline/NiMH or 1 cell Li-Ion battery to 5V
boost conversion in portable devices. With an excellent efficiency of up to 99%
in 1:1 mode and up to 90% in 1:2 or 2:3 mode the AS1302 offers lowest quiescent
current and features a 10nA shutdown mode in which the output is fully
disconnected from the input.

"Inductorless DC-DC converters like the AS1302 are often the ideal solution for
extremely space restricted applications requiring high efficiency," commented
Walter Moshammer, Marketing Director Standard Linear at austriamicrosystems.
"They require only small capacitors and have no need for bigger inductors to
generate the desired voltage which has the additional advantage of no
electromagnetic emissions influencing the application."

To prevent excessive inrush current during startup, the AS1302 offers a
soft-start feature plus additional features like overload protection and thermal
shutdown circuitry. The AS1302 is available in a 1.2x1.2mm WL-CSP 8-bump package
and is suitable for operating environments ranging from -40 to +85°C.

For product specific information, to download data sheets or to request free
samples from austriamicrosystems' online shop ICdirect, please visit
www.austriamicrosystems.com/DC-DC-Step-up-Converters/AS1302.

About austriamicrosystems

austriamicrosystems is a leading designer and manufacturer of high performance
analog ICs, combining more than 25 years of analog design capabilities and
system know-how with its own state-of-the-art manufacturing and test facilities.
austriamicrosystems leverages its expertise in low power and high accuracy to
provide industry-leading customized and standard analog products. Operating
worldwide with more than 1,000 employees, austriamicrosystems focuses on the
areas of power management, sensors & sensor interfaces and mobile entertainment
in its markets Communications, Industry & Medical and Automotive, complemented
by its Full Service Foundry activities. austriamicrosystems is listed on the SWX
Swiss Exchange in Zurich (ticker: AMS).

austriamicrosystems
Ulrike Anderwald
Media Relations
phone: +43 (0) 3136 500 5856
press@austriamicrosystems.com
www.austriamicrosystems.com

Copyright Business Wire 2009