资 源 简 介
The bq24180 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applicaTIons. The charge parameters is programmable using an I2C compaTIble interface. The bq24180 integrates a synchronous PWM controller, power MOSFETs, input current sensing and overvoltage protecTIon, high-accuracy current and voltage regulaTIon, and charge termination, into a small WCSP package.
The bq24180 charges the battery in three phases: conditioning, constant current and constant voltage. Charge current is programmable using the I2C interface. Additionally, the input current can be limited to a host programmable threshold to maintain maximum charge current from current-limited sources, such as USB ports.
