MPPC boost converter targets energy-harvesting apps

MPPC boost converter targets energy-harvesting apps

The LTC3105 synchronous boost converter incorporates maximum power point control (MPPC) and starts up with inputs as low as 250 mV. It operates from 0.2 to 5 V and harvests energy from high-impedance alternative power sources, including photovoltaic cells, thermoelectric generators, and fuel cells and powers wireless sensors and data acquisition applications.

The boost converter has internal 400-mA synchronous switches to maximize efficiency while its burst-mode operation offers quiescent current of 22 µA, to further optimize converter efficiency over all operating conditions. A user-programmable MPPC setpoint maximizes the energy that can be extracted from any power source without collapsing its internal voltage. The converter offers an auxiliary LDO that delivers up to 6-mA output current to power external microcontrollers and sensors while the main output is charging. Once fully charged, the main output can deliver voltages as high as 5.25 V with up to 100-mA output current. It can also regulate VOUT even when VIN is greater than or equal to VOUT. (From $2.70 ea/1,000 — available now.)

Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com