1FEATURES
• 2-Series, 3-Series, or 4-Series Cell Protection
Control
• Can Directly Interface with the bq803x-Based
Gas Gauge Family
• Watchdog and POR for the Host
• Provides Individual Cell Voltages and Battery
Voltage to Battery Management Host
• Capable of Operation With 5-mΩ Sense
Resistor Integrated Cell Balancing Drive
• I2C Compatible User Interface Allows Access
to Battery Information
• Programmable Threshold and Delay for
Overload Short Circuit in Discharge and Short
Circuit in Charge
• NMOS FET Drive for Charge and Discharge
FETs
• Host Control can Initiate Sleep and Ship Power
Modes
• Integrated 2.5-V, 16-mA LDO
• Integrated 3.3-V, 25-mA LDO
• Supply Voltage Range from 4.5 V to 28 V
• Low Supply Current of 100 μA Typical

APPLICATIONS
• Notebook Computers
• Medical and Test Equipment
• Instrumentation and Measurement Systems

DESCRIPTION
The bq29330 is a 2-series, 3-series, and 4-series cell lithium-ion battery pack full-protection analog front end
(AFE) IC that incorporates a 2.5-V, 16-mA and 3.3-V, 25-mA low dropout regulator (LDO). The bq29330 also
integrates an I2C-compatible interface to extract battery parameters such as battery voltage, individual cell
voltages, and control output status. Other parameters such as current protection thresholds and delays can also
be programmed into the bq29330 to increase the flexibility of the battery management system.