The BQ298xx family
of devices, featuring integrated charge-pump FET drivers,
provides high-side primary battery cell protection for
1-series Li-ion and Li-polymer batteries, enabling
consistent Rdson across cell voltages. For better system
thermal performance, the BQ298xx devices accuracy enables
the use of a sense resistor as low as 1mΩ.
The CTR pin in the
BQ298xx device can be configured to override the FET driver
by host control to create a system reset or shutdown
function. Alternatively, the CTR pin can be configured to
connect an external Positive Temperature Coefficient (PTC)
thermistor for FET OT protection in addition to the internal
die temperature sensor. The BQ2980xx devices support
zero-volt (0V) charging, while the BQ2982xx devices have
this disabled.
The BQ298xx family
of devices, featuring integrated charge-pump FET drivers,
provides high-side primary battery cell protection for
1-series Li-ion and Li-polymer batteries, enabling
consistent Rdson across cell voltages. For better system
thermal performance, the BQ298xx devices accuracy enables
the use of a sense resistor as low as 1mΩ.
The CTR pin in the
BQ298xx device can be configured to override the FET driver
by host control to create a system reset or shutdown
function. Alternatively, the CTR pin can be configured to
connect an external Positive Temperature Coefficient (PTC)
thermistor for FET OT protection in addition to the internal
die temperature sensor. The BQ2980xx devices support
zero-volt (0V) charging, while the BQ2982xx devices have
this disabled.