BQ25570 is an Ultra-Low-Power Harvester Power Management IC

This post sponsored by Texas Instruments.

The BQ25570 device is specifically designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high-output impedance DC sources without collapsing them.

Sources include photovoltaic (solar) and thermal electric generators (TEG). The battery-management features ensure that a rechargeable battery is not overcharged by this extracted power. In addition to the highly efficient boosting charger, the BQ25570 integrates a highly efficient, nano-power buck converter for providing a second power rail to systems such as wireless sensor networks (WSN). These networks have stringent power and operational demands. All the capabilities of BQ25570 are packed into a small footprint, 20-lead, 3.5-mm-by-3.5-mm QFN package (RGR). The ultra-low-power DC-DC boost charger has a cold-start voltage of VIN ≥ 330 mV and continuous energy harvesting from VIN as low as 100 mV. It features a full operating quiescent current of 488 nA (typical) and a ship mode with click here.
For detailed information about the tool mentioned above, click here.
To request a sample, click here.
To download a datasheet, click here.

To buy now at Mouser, click here.