CXLB73185 is a rechargeable button battery charge management chip that can be powered by solar panels. The device includes a power transistor inside, and does not require an external current sense resistor and blocking diode when applied. The internal charging current adaptive module can automatically adjust the charging current according to the current output capacity of the input power supply, and the user does not need to consider the worst case, and can make maximum use of the current output capacity of the input power supply, which is very suitable for the application of power supply with limited current output capacity such as solar panels. CXLB73185 require very few peripheral components and are well suited for portable applications. The thermal modulation circuit can control the chip temperature within a safe range when the power consumption of the device is relatively large or the ambient temperature is relatively high. The internal fixed constant voltage charging voltage is 3.3V, which can also be adjusted upward through an external resistor. It is very suitable for charging applications of button-type lithium manganese batteries, lithium iron phosphate batteries and lithium batteries. The charging current is set by an external resistor. When the input voltage is powered down, the CXLB73185 automatically enters a low-power sleep mode, at which time the battery current consumption is less than 3 microamps. Other functions include low input voltage latch, automatic recharging and charging status indication.
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[ CXLB73185 ]"
