Cxlb7263 is a PWM Buck mode single lithium battery charging management integrated circuit, which independently manages the charging of a single lithium battery. It has the advantages of small footprint, few peripheral components and simple use.
With trickle, constant current and constant voltage charging modes, cxlb7263 is very suitable for lithium battery charging management. In the constant voltage charging mode, the cxlb7263 modulates the battery voltage to 4.2V, which can also be adjusted upward through an external resistance; in the constant current charging mode, the charging current is set through an external resistance. For deep discharge lithium battery, when the battery voltage is lower than constant voltage charging
At 66.5% of the electrical voltage (typical), the cxlb7263 uses 17.5% of the set constant current charging current to trickle charge the battery. In the constant voltage charging stage, the charging current decreases gradually. When the charging current decreases to 16% of the constant current charging current, the charging ends. At the end of charging state, if the battery voltage drops to 95.5% of the constant voltage charging voltage, a new charging cycle will start automatically. When the input power supply is powered down or the input voltage is lower than the battery voltage, cxlb7263 automatically enters the sleep mode. Other functions include input low voltage latch, battery terminal over-voltage protection and charging status indication