The bq25505 device is specifically designed to efficiently extract the microwatts (µW) to
miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources
like photovoltaic (solar) or thermal electric generators (TEGs) without collapsing those sources.
The battery-management features of the bq25505 ensure that a secondary rechargeable battery is not
overcharged by this extracted power, with voltage boosted, nor depleted beyond safe limits by a
system load. The integrated multiplexer gate drivers autonomously switch the system load to a
primary nonrechargeable battery if the secondary battery voltage falls below the user-defined
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