The BQ298xyz devices are high-side single-cell protectors designed to improve thermal performance by reducing power dissipation across the protection FETs. This is achieved with high-side protection with a built-in charge pump to provide higher Vgs to the FET gate voltage to reduce FET Rdson. Additionally, the device supports as low as a 1-mΩ sense resistor with ±1-mV accuracy, resulting in lower heat dissipation at the sense resistor without compromising current accuracy.

The BQ298x device implements a CTR pin that allows external control to open the power FETs, as well as shut down the device for low power storage. Optionally, the CTR pin can be configured to connect to a PTC and be used for overtemperature protection.