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BQ24185,pdf(Data sheet)
杨福林
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The bq24185 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 bq24185 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 bq24185 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.
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