The company claims that the AS1358/59/61/62 low dropout regulator (LDO) family delivers noise performance of less than 9µVRMS and up to 92dB power supply ripple rejection ratio (PSRR). It operates from a 2-5.5V supply and is suitable for dual or triple standard-cell and single Li-Ion battery powered applications.
According to the company, it has a low dropout voltage of 70mV typ @ 150mA and 140mV typ @ 300mA at an extremely low current of only 40µA typ during operation and stunning 9nA typ during shutdown. The AS1361/62 has a power-ok output that signals when the output voltage drops out of regulation.
AS1358/59/61/62 are the LDOs of choice for powering circuits that require a low-noise supply, such as RF, cell-phone cameras, wireless base stations and PA bias supplies, said 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 are available in a 5-pin TSOT23 package and the AS1361/62 are available in a 6-pin TSOT23 package, which the company claims are suitable for operating environments ranging from -40 to +85 degree Celsius.
In August 2007, Austriamicrosystems had launched AS1360, a 1.5µA ultra low quiescent current, 20V LDO to extend the operating time of low power applications.
Source: ComputerWire daily updates
