Product category:
Power Supply ICs and Controllers
News Release from: austriamicrosystems | Subject: AS1358/59/61/62 family
Edited by the Electronicstalk Editorial
Team on 26 November 2007
LDOs are optimised for noise performance
With the choice of 150 or 300mA output current, the ultra-low-noise LDO family delivers sufficient power for a wide range of applications.
Austriamicrosystems has expanded its low dropout regulator (LDO) portfolio with the AS1358/59/61/62 family, which is optimised to deliver outstanding noise performance of less than 9uV RMS and up to 92dB power supply rejection ratio (at 1kHz typical) Running from a 2 to 5.5V supply, the new devices are claimed to be perfect for dual or triple standard-cell and single Li-ion battery powered applications
This article was originally published on Electronicstalk on 5 Feb 2008 at 8.00am (UK)
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With a low dropout voltage of typically 70mV at 150mA and 140mV at 300mA (AS1359/62 only) at an extremely low current typical of only 40uA during operation and a remarkable 9nA during shutdown, battery life time can be maximised using these new ultra-low-noise ICs.
"AS1358/59/61/62 are the LDOs of choice for powering circuits that require a low-noise supply, such as RF, cellphone cameras, wireless basestations and PA bias supplies", says Walter Moshammer, Marketing Director Standard Linear at austriamicrosystems.
"Offering low dropout voltage as well as low quiescent current, this ultra-low-noise LDO family is ideally suited for any battery-powered device".
The AS1358/59/61/62 family offers preprogrammed output voltages in the range between 1.4 and 4.5V with an output voltage accuracy of excellent 1% (at 300mA).
An additional feature of the AS1361/62 is a power-OK output that signals when the output voltage drops out of regulation.
A digital enable pin with a turn-on time of only 300us allows system-level dynamic power management.
Furthermore, the devices offer overtemperature and overcurrent protection.
With the choice of 150mA (AS1358/61) and 300mA (AS1359/62) output current, the new ultra-low-noise LDO family delivers sufficient power for a wide range of applications.
The AS1358/59 are available in 5-pin TSOT23 packages and the AS1361/62 come in a 6-pin TSOT23 packages, both suitable for operating environments ranging from -40 to +85C.
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