CJMCU-25504 Boost Converter Solar Cell Management Nanopower Energy Collector

Description The CJMCU 25504 is the first new smart integrated energy harvesting power management solution ideally suited for ultra low power applications with special needs The device is specifically designed to capture and manage microwatts W to milliwatts mW of power generated from various sources such as photovoltaic solar generators or thermoelectric generators The bq25504 is the first in its class to implement an efficient boost converter charger for products and systems that have tight power and operational requirements such as wireless sensor networks WSNs The design of the bq25504 starts with just a tiny watt of power the boost converter charger After the boost converter charger is started energy can be efficiently extracted from a low voltage output collector such as a thermoelectric generator TEG or one two solar panels The boost converter can pass V as low as 330mVINStart start you can rely on as low as 80mV VINContinue to collect energy The bq25504 also implements a programmable maximum power point tracking sampling network to optimize power transfer to the device VIN DC open circuit voltage sampling is programmed by an external resistor and is controlled by an external capacitor CREF Hold For example a solar cell with an open circuit voltage of 80 at maximum power point sets the resistor divider to 80 of the VIN DC voltage at which point the network will control VIN DC near the sampled reference voltage Alternatively an ext