Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for battery monitoring ICs, such as keeping the device close to the battery, using a solid ground plane, and minimizing noise coupling.
Calibration involves setting the device's internal registers to match the specific battery chemistry and characteristics. TI provides a calibration procedure in the datasheet, which involves measuring the battery's voltage and temperature and adjusting the device's registers accordingly.
The BQ2204ASN-NTR is designed to monitor a single battery, but it can be used in a multi-battery system by using multiple devices, each monitoring a separate battery. However, the maximum number of batteries that can be connected depends on the system design and the specific application requirements.
The BQ2204ASN-NTR does not have built-in battery balancing capabilities. However, it can be used in conjunction with external balancing circuits or other devices that provide balancing functionality. The device's monitoring data can be used to control the balancing circuitry.
The BQ2204ASN-NTR uses an I2C (Inter-Integrated Circuit) interface for communication with a microcontroller or other host device. The device operates as a slave device on the I2C bus.
BQ2204ASN-NTR datasheet
by Texas Instruments
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