Energy Harvesting

The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current makes charging possible from previously unusable sources. With its low operating current the LTC4071 is well suited to charge low capacity Li-Ion or thin film batteries in energy harvesting applications. The unique architecture of the LTC4071 allows for an extremely simple battery charger solution, requiring just one external resistor.

The LTC4071 offers a pin selectable float voltage with ±1% accuracy. The integrated thermal battery qualifier extends battery lifetime and improves reliability by automatically reducing the battery float voltage at NTC thermistor temperatures above 40°C. The LTC4071 also provides two pin selectable low battery disconnect levels and a high battery status output. The device is offered in two thermally enhanced packages, a compact low profile (0.75mm) 8-lead (2mm × 3mm) DFN and an 8-lead MSOP package.

The bq25504 is the first of a new family of intelligent integrated energy harvesting Nano-Power management solutions that are well suited for meeting the special needs of ultra low power applications. The product is specifically designed to efficiently acquire and manage the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC sources like photovoltaic (solar) or thermal electric generators.

The bq25504 is the first device of its kind to implement a highly efficient boost converter/charger targeted toward products and systems, such as wireless sensor networks (WSN) which have stringent power and operational demands. The design of the bq25504 starts with a DCDC boost converter/charger that requires only microwatts of power to begin operating.

The TGP-751 / TGP-651 are packaged Micropelt thermogenerators, which offer the superior performance of Micropelt’s thin-film, solid-state generators in a standard packaging concept.

Micropelt’s thermogenerator chips offer a very high power density, with up to 100 leg pairs per mm², and a very high output voltage of up to 1.75 V per Watt of thermal input.

IPS' innovative THINERGY® Micro-Energy Cells (MECs) are revolutionary solid-state, rechargeable, energy storage solutions that serve a variety of vertical markets. These paper-thin MECs are flexible and provide unrivaled cycle life and power performance. Able to operate in temperatures ranging from -40ºC to +85ºC, these ultra-thin MECs offer extremely low self discharge rates, low cell resistance and high power-making THINERGY the industry leading micro-energy storage offering. THINERGY Micro-Energy Cells are ideally suited for use with all forms of ambient energy harvesting techniques for recharging-such as solar, thermal, RF, magnetic and vibration energy, delivering a safe, reusable and clean power source for today's electronic devices and systems.