New Products
July 10, 2007
austriamicrosystems Unveils Single-Cell DC-DC Boost Converter
austriamicrosystems AG introduced the AS1323, a ultra-low quiescent current, step-up dc-dc converter which comes in a small 5-pin TSOT package. The AS1323 delivers 100mA output current from a single AA battery with possible fixed output voltages of 2.7, 3.0 and 3.3V, operating from an input voltage between 0.75 and 2V.
The AS1323 offers an integrated low-voltage boot circuit which ensures start-up even with high load currents. The minimum start-up voltage of 0.95V is independent of the load current. The product has a 1.6µA quiescent current and a shutdown mode drawing less than 200nA current. Furthermore, during shutdown the battery is completely disconnected from the output.
"Many single cell devices such as medical applications are used only a few times a day for measurements. For those applications a long period of minimal power consumption and a short period of high current consumption is typical," said Walter Moshammer, Marketing Director for Standard Linear at austriamicrosystems. "austriamicrosystems’ AS1323 addresses this requirement with its extremely low quiescent current of 1.6µA and high efficiencies at lowest output currents. Capable to drive high output currents even if the input voltage is very low, the AS1323 is a perfect match for such single cell applications."
Another feature of this device is an internal synchronous rectification which ensures high efficiency and eliminates the need for an external diode, saving cost and size. The AS1323 has been designed to operate with physically small external components.
The AS1323 is available in a 5-pin TSOT23 package suitable for the industrial temperature range of -40 to +85°C.
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Did You Know?
Primitive batteries capable of producing ½ volt of electricity were made in Mesopotamia between around 200 B.C. and 200 A.D. They were used mainly for electroplating silver onto copper.