bq29311
Overview
The bq29311 is a three- or four-cell lithium-ion battery pack protection analog front end (AFE) IC that incorporates a 3.3-V 25-mA low-dropout regulator (LDO) and an I2C compatible interface to extract battery parameters such as cell voltages and control output status. Other parameters, such as overcurrent protection threshold and delay, can also be programmed into the bq29311 to increase the flexibility of the battery management system.
- 3- or 4-Cell Series Protection Control
- Autonomous Overcurrent and Short Circuit Protection
- Provides Individual Cell Voltages to Battery Management Host
- Integrated Cell Balancing Control
- I2C Compatible User Interface Allows Access to Battery Information
- User Control to Initiate Protection
- Integrated 3.3-V 25-mA LDO
- Programmable Shutdown and Brownout Control
- Provides Drive for Three External FETs
- Low Supply Current of 140 µA Typical
