The CXLB73218 is a charger circuit that can charge a single rechargeable lithium battery with constant current/constant voltage. The device includes a power transistor inside, and does not require an external current sense resistor and blocking diode when applied. CXLB73218 need very little.
Peripheral components, and comply with the USB bus technical specifications, is very suitable for portable applications in the field. 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 4.35V, which can also be adjusted by an external resistor. The charging current is set by an external resistor. When the input voltage (AC adapter or USB power supply) is powered down, the CXLB73218 automatically enters a low-power sleep mode, at which time the battery current consumption is less than 0.1 μA. Built-in anti-backfilling protection circuit, when the battery voltage is higher than the input voltage, automatically turn off the built-in power MOSFET. Other features include low input voltage latch, automatic recharge, built-in battery temperature monitoring and state of charge/end of charge indication. The CXLB73218 is DFN2020-8L in a thermally enhanced 8-pin small outline package.
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[ CXLB73218 ]"
