| austriamicrosystems
has launched the AS1352, a high-performance programmable
quad CMOS low dropout voltage regulator (LDO) in a single
4x4mm package at electronica 2004 Booth A5.121.
In the AS1352, the programmable regulators have been
optimised to deliver the best compromise between quiescent
current and regulator performance for mobile phones,
PDAs, MP3 players and other battery-powered devices.
The one-time programmable (OTP) function of the AS1352
provides a high degree of design flexibility by allowing
engineers to program the output voltage for each regulator
on-site in the range from 1.8V to 3.3V in steps of 100mV.
This allows for fast prototyping as well as full-production
ramp up. Factory trimmed versions are also available.
The device offers better than
± 2% accuracy of the output voltage and output
currents of 200mA for each LDO.
Stability is guaranteed with ceramic output capacitors
of only 1µF (± 20%-X5R) up to 4.7µF (± 20%-X5R).
The low equivalent series resistance of these capacitors
ensures low output impedance at high frequencies.
"Regulation performance of the AS1352 is excellent
even under low dropout conditions when the power transistor
has to operate in linear mode," said Walter Moshammer,
Marketing Director of austriamicrosystems’
communications business unit. "The low-noise performance
of 40µV rms @ 10Hz to 100Hz bandwidth allows direct
connection of noise-sensitive circuits without additional
filtering networks."
Standalone demonstration boards for the AS1352 are
available making it easy for engineers to plug and play
in the lab, particularly for programming output voltages
before implementation on PCBs.
The AS1352 is available in 12-pin QFN 4x4mm or in wafer
bumping packaging.
About austriamicrosystems
austriamicrosystems
AG is a leading designer and manufacturer of highly
integrated analog intensive mixed signal ICs. austriamicrosystems
combines more than 20 years of design capabilities,
product and marketing know-how with its own cutting
edge analog manufacturing and test facilities. Operating
worldwide with more than 800 employees, austriamicrosystems
serves four strategic markets: Communications, Industry
& Medical, Automotive and Full-Service Foundry.
austriamicrosystems AG is listed on the SWX Swiss Exchange
in Zurich (ticker symbol: AMS). | 
