1 Features
• Voltage protection:
– Overvoltage (OV): ±10 mV
– Undervoltage (UV): ±20 mV
• Current protection:
– Overcurrent in charge (OCC): ±1 mV
– Overcurrent in discharge (OCD): ±1 mV
– Short circuit in discharge (SCD): ±5 mV
• Temperature protection:
– Overtemperature (OT)
• Additional features:
– Supports as low as a 1-mΩ sense resistor
(RSNS)
– High-side protection
– High Vgs FET drive
– 0-V charging (only BQ2980)
– CTR pin for FET override control for system
reset/shutdown
– Configure CTR for second OT protection
through an external PTC thermistor
• Current consumption:
– NORMAL mode: 4 μA
– SHUTDOWN mode: 0.1-μA maximum
• Package:
– 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm

2 Applications
• Smartphones
• Tablets
• Power bank
• Wearables

3 Description
The BQ298xyz family of devices, featuring integrated
charge-pump FET drivers, provides high-side primary
battery cell protection for 1-series Li-ion and Lipolymer
batteries, enabling consistent Rdson across
cell voltages. For better system thermal performance,
the BQ298x device's accuracy enables the use of a
sense resistor as low as 1 mΩ.
The CTR pin in the BQ298x 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 BQ2980xy devices support
zero-volt (0-V) charging, while the BQ2982xy devices
have this disabled.