DC to DC Power Supplies (Converters)
Step-Down DC-DC Regulator offers up to 96% efficiency.
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Press Release Summary:
Housed in 3 x 3 mm TDFN package, 20 V Model AS1341 delivers 600 mA at 5.0 V from 12 V input and can provide adjustable output voltages from 1.25 to VIN or fixed 5 V. Built-in current limit function can be set to 0.7 or 1.4 A switching current for optimizing converter to inductor and load. With low quiescent current of 12 µA, regulator conserves battery life, making it suited for notebooks and handheld systems. During shutdown, current draw is reduced to 0.8 µA.
Original Press Release:
austriamicrosystems' New 20V Step-Down DC-DC Regulator Offers up to 96% Efficiency
AS1341 high voltage buck regulator offers low 12µA quiescent current and 600mA output current
Unterpremstaetten, Austria (December 17, 2007) - austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of analog ICs for communications, industrial, medical and automotive applications, today expanded its DC-DC converter portfolio with the AS1341, a hysteretic high efficiency 20V step-down regulator in a small 3x3mm TDFN 8-pin package, ideally suited to increase battery life in applications like notebooks and handheld systems.
The AS1341 DC-DC regulator delivers 600mA at 5.0V from a 12V input and can provide adjustable output voltages in the range of 1.25V to VIN or fixed 5V. The device operates from an input voltage of between 4.5 and 20V and offers a high efficiency rate of up to 96%. Additionally, an integrated 100% duty-cycle mode improves efficiency in low dropout conditions.
"Especially in applications where the main power supply is at levels of 12V or higher DC-DC converters such as the AS1341 are strongly recommended to generate low supply voltages down to 1.25V," said Walter Moshammer, Marketing Director Standard Linear at austriamicrosystems. "Due to the AS1341's high efficiency rate of up to 96%, heat dissipation is extremely low, when compared to linear regulators, which means no expensive cooling plates or fans are required. The high efficiency rate provided by AS1341 also helps portable devices to extend the time between battery replacement or recharge cycles".
The AS1341 DC-DC converter allows the use of tiny low profile inductors and small capacitors. Its built-in current limit function can be set to 0.7 or 1.4A switching current for optimizing the converter to the used inductor and load.
The AS1341's low quiescent current of 12μA improves light load efficiency and conserves battery life. During shutdown the current draw is reduced to only 0.8μA.
The AS1341 DC-DC converter is available now in a 3x3mm TDFN 8-pin package and is specified for the industrial temperature range of -40°C to +85°C. Product-specific information and free samples via austriamicrosystems' online shop ICdirect are available at http://austriamicrosystems.com/03products/products_detail/AS1341/AS1341.htm
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, 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. Electronic picture and block diagram are available on request or at
http://austriamicrosystems.com/07presscenter/presscenter_start.htm
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
Manfred Kogler
Marketing Manager Standard Linear
Tel: +43 (0) 3136 500 5274
Fax: +43 (0) 3136 500 5420
manfred.kogler@austriamicrosystems.com
www.austriamicrosystems.com
