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DC/DC Converter
January 2007
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The AS1325 is a high-efficiency step-up DC/DC converter with a fully integrated synchronous rectifier. With an efficiency of 96 percent, the converter is said to be an ideal solution for battery-powered, portable applications requiring 3.3 V or 5.0 V supply voltage. The converter is said to offer a significantly increased output current, while providing a supply voltage of 1.5 V to 3.5 V (for 3.3 V output voltage) or 1.5 V to 5.0 V (for 5.0 V output voltage). Supplied with less than 2 V, the converter is capable of delivering a 300 mA output current at 5.0 V output voltage or 185 mA at 3.3 V output voltage. The converter features a shutdown mode, which draws less than 1mA. In shutdown mode, the battery is connected directly to the output to enable direct battery feed-through. The converter is available in a 6-pin SOT23 package. austriamicrosystems



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