Linear Technology unveiled the LTC3330, a complete regulating energy harvesting solution that delivers up to 50 mA of continuous output current to extend battery life when harvestable energy is available. The IC requires no supply current from the battery when providing regulated power to the load from harvested energy and only 750 nA operating when powered from the battery under no-load conditions.
The device integrates a high-voltage energy harvesting power supply, plus a synchronous buck-boost DC/DC converter powered by a primary cell battery to create a single non-interruptible output for energy harvesting applications such as those in wireless sensor networks.
The primary cell input powers a buck-boost converter that operates from 1,8 V to 5,5 V at its input when harvested energy is not available to regulate the output whether the input is above, below or equal to the output. The LTC3330 automatically transitions to the battery when the harvesting source is no longer available.
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