September 26, 2008 -
Suited for battery-driven OLED or LCD displays, Model AS1343 delivers 40 mA at 24 V from two AA cells or 30 mA at 12 V from single AA cell. Unit operates from single 0.9-3.6 V supply and can provide adjustable output voltages from 5.5-42 V. Housed in 3 x 3 x 0.8 mm TDFN 10-pin package, converter offers automatic power save operation, 1 MHz fixed switching frequency, 2% output voltage accuracy, and micro-power design that reduces operating supply current to 22 µA.
austriamicrosystems New DC-DC Boost Converter Delivers 42V from a Low Voltage Input
The AS1343 offers micro-power consumption with high efficiency while delivering high output voltages especially suited for battery driven OLED or LCD displays
Unterpremstaetten, Austria (September 17, 2008) - austriamicrosystems (SWX:AMS), a leading global designer and manufacturer of high performance analog ICs for communications, industrial, medical and automotive applications, launched today the AS1343 high voltage DC-DC boost converter optimized for LCD or OLED display bias from low voltage inputs of single cell battery powered applications.
The AS1343 delivers 40mA at 24V from two AA cells or 30mA at 12V from a single AA cell and can provide adjustable output voltages in the range of 5.5 to 42V. The AS1343 operates from a single 0.9 to 3.6V supply. The 1MHz fixed switching frequency minimizes the PCB footprint by allowing the use of tiny, low profile inductors and
capacitors. This constant frequency switching results in low, predictable output noise that can be easily filtered.
"LCD and OLED displays are used in almost every portable application on the market. Since these applications are battery driven, they need a high efficiency step-up converter able to deliver an output voltage of 12V or higher with a relatively moderate current of around 20mA," said Walter Moshammer, Marketing Director Standard Linear at austriamicrosystems." austriamicrosystems' AS1343 addresses this need offering a very high efficiency even at highest output voltages. Additionally single or dual cell applications are directly supported."
The AS1343 also offers an automatic power save operation which improves the efficiency at light loads.
Furthermore, the micropower design reduces the operating supply current to only 22µA. This significant reduction of the power consumption of the AS1343 substantially increases battery life in the application. Moreover the AS1343 offers a shutdown mode requiring less than 1µA current combined with an output disconnect feature.
The AS1343 offers 2% output voltage accuracy and an available power-ok feature indicates if voltage is within 10% of regulation. The part is ideally suited for powering a variety of different OLED or LCD displays in handheld devices or any other application requiring high output voltages.
The AS1343 is available in the compact 3 x 3x 0.8mm TDFN 10-pin package and covers the industrial temperature range of -40°C 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...
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, portable audio and car access 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 symbol: AMS). For more information, please visit the web site at www.austriamicrosystems.com.
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