DC-DC Boost Converter features inductorless design.
Share:
Press Release Summary:
Offering low-noise constant frequency operation, Model AS1302 is capable of output currents as high as 30 mA from input of 2.9-5.15 V. It includes 10 nA shutdown mode in which output is fully disconnected from input, and soft-start feature that prevents excessive inrush current during startup. With 1.2 MHz switching frequency, device provides up to 99% efficiency in 1:1 mode and up to 90% in 1:2 or 2:3 mode. Available in 1.2 x 1.2 mm WL-CSP 8-bump package, unit operates from -40 to +85°C.
Original Press Release:
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 (January 12, 2009) - 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 constantfrequency 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 ≤2.2µF 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 http://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).
For further information
Press Contact
austriamicrosystems AG
Ulrike Anderwald
Marketing Communications Manager
Tel: +43 (0) 3136 500 5856
Fax: +43 (0) 3136 500 5420
press@austriamicrosystems.com
www.austriamicrosystems.com
Technical Contact
austriamicrosystems AG
Rene Wutte
Marketing Manager Standard Linear
Tel: +43 (0) 3136 500 5653
Fax: +43 (0) 3136 500 5420
rene.wutte@austriamicrosystems.com
www.austriamicrosystems.com
