The LTC3588-1 is designed to interface directly with a piezoelectric or alternative AC power source, rectify a voltage waveform and store harvested energy in an external storage capacitor while dissipating any excess power via an internal shunt regulator. An ultralow quiescent current (450nA) undervoltage lockout (ULVO) mode with a wide hysteresis window enables charge to accumulate on the storage capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In its no load sleep state, the LTC3588-1 regulates the output voltage, consuming only 950nA of quiescent current while continuously charging the storage capacitor. The LTC3588-1 requires minimal external components and is packaged in either a 3mm x 3mm DFN or a thermally enhanced MSOP-10 package, providing a compact solution footprint for a broad range of energy harvesting applications.
The LTC3588EDD-1 is available in a 3mm x 3mm DFN package and the LTC3588EMSE-1 is available in a thermally enhanced MSOP-10 package.