| Cell chemistry | Li-Ion/Li-Polymer, LiFePO4 |
| Number of series cells | >4 Cells |
| Communication interface | I2C, SMBus |
| Battery capacity (Min) (mAh) | 100 |
| Battery capacity (Max) (mAh) | 320000 |
| Implementation | Pack |
| External capacity indication | LCD, LED, SOC |
| Features | CEDV algorithm |
| Operating temperature range (C) | -40 to 85 |
| Cell balancing | External, Internal |
| | |
- Compensated end-of-discharge voltage (CEDV) gauging algorithm
- Supports SMBus host communication
- Flexible configuration for 3- to 5-series (BQ76920), 6- to 10-series (BQ76930), and 9- to 15-series (BQ76940) li-ion and LiFePO4 batteries
- Supports battery configurations up to 320 Ahr
- Supports charge and discharge current reporting up to 320 A
- On-chip temperature sensor option
- External NTC thermistor support from companion AFE
- Full array of programmable protection features
- Voltage, current, and temperature
- System components
- Lifetime data logging
- Supports CC-CV charging, including precharge, charge inhibit, and charge suspend
- Offers an optional resistor programmable SMBus slave address for up to eight different bus addresses
- Drives up to a 5-segment LED or LCD display for state-of-charge indication
- Provides SHA-1 authentication
The Texas Instruments BQ78350-R1A li-ion and LiFePO4 Battery Management Controller and companion to the BQ769x0 family of analog front end (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.
The BQ78350-R1A controller and the BQ769x0 AFE support 3-series to 15-series cell applications. The BQ78350-R1A device provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.
The BQ78350-R1A device offers optional LED or LCD display configurations for capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.