The SC8831A is a synchronous buck charger that supports
buck and boost modes during forward or reverse
discharging operations. It manages 1S to 4S battery
charging from a wide input range from 4.5V to 24V and
supports automatic system power selection with NMOS
drivers on the battery and adapter sides.
The device adopts hybrid power boost architecture, allowing
the battery to work with the adapter to supply the system
load when it exceeds the adapter capability in turbo mode.
The adapter provides the system power directly and charges
the battery pack with dynamic power management to avoid
over-loading. As the system power increases, the charging
current will reduce to maintain the adapter current in
regulation. The hybrid power boost mode will be triggered to
supplement system power if the system power continuously
increases.
The user can flexibly set the charging current, charging
voltage, input current limit, discharge current limits,
switching frequency, and other parameters flexibly through
the I2C interface. Besides, charging and discharging current
also can be set in real-time via the external ILIM pin.
The SC8831A can operate in learn and ship modes to meet
the user's demands. Full protection includes overtemperature
protection, adapter, and battery over-voltage
protection, input MOSFETs over-current protection, battery,
inductor, and MOSFET short circuit protection.
SC8831A is available in a 4mm x 4mm QFN-28 Package
MPQ:3000
掌上电脑/工业设备/带有可充电电池的设备