CXLB73244 is a single lithium battery charging management chip that can be powered by solar energy. The device includes power transistors internally and does not require external current sensing resistors or resistive diodes. The internal charging current adaptive module can automatically adjust the charging current according to the current output capability of the input power supply. Users do not need to consider the worst-case scenario and can maximize the use of the current output capability of the input power supply. It is very suitable for lithium battery charging applications powered by limited current output capabilities such as solar panels. CXLB73244 requires very few peripheral components, making it very suitable for portable applications. The thermal modulation circuit can control the chip temperature at around 132 ℃ when the power consumption of the device is relatively high or the ambient temperature is high to avoid excessive chip temperature. The internally fixed constant voltage charging voltage is 4.2V, which can also be adjusted upwards through an external resistor. The charging current is set through an external resistor. When the input voltage drops, CXLB73244 automatically enters low-power sleep mode, and the battery current is less than 3 microamperes. Other functions include low input voltage latch, automatic recharging, JEITA compliant battery temperature monitoring, charging current overcurrent protection, and charging status/charging end status indication. CXLB73244 adopts the heat dissipation enhanced 8-pin SOP package (eSOP 8).
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[ CXLB73244 ]"
