EDN’s 20th annual Innovation Awards Finalists
-- EDN, February 18, 2010
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&& PREVIOUS FINALIST | MAIN | NEXT FINALIST >> Category: Power: Converters Finalist: LTC3108 ultralow-voltage step-up dc/dc converter, Linear Technology  The LTC3108 is a step-up dc-dc converter designed to start up and run from 20-mV voltage sources such as thermoelectric generators (TEGs), thermopiles, and small solar cells. The part has selectable output voltages of 2.35V, 3.3V, 4.1V, or 5V. It has an auxiliary low-dropout regulator output of 2.2V at 3 mA. Using a small step-up transformer, the LTC3108 provides a complete power management solution for wireless sensing and data acquisition applications. The 2.2V LDO powers an external microprocessor, while the main power output can be programmed to one of four fixed voltages to power a wireless transmitter or sensors. A second output can be enabled as the host as needed and a storage capacitor provides power when the input voltage is unavailable. The LTC3018’s unique topology ensures quiescent current less than 6 uA and high efficiency to ensure the fastest possible charge times of the reservoir capacitor. The combination of the LTC3108’s 3×4-mm DFN package (or SSOP-16) and very small external components provide a highly compact solution for energy harvesting applications. |
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