The bq40z50-R2 device, incorporating
patented Impedance Track™ technology, is a fully integrated,
single-chip, pack-based solution that provides a rich array of features for gas gauging,
protection, and authentication for 1-series, 2-series, 3-series, and 4-series cell Li-Ion and
Li-Polymer battery packs.
Using its integrated high-performance analog peripherals, the bq40z50-R2 device measures and maintains an accurate record of available
capacity, voltage, current, temperature, and other critical parameters in Li-Ion or Li-Polymer
batteries, and reports this information to the system host controller over an SMBus v1.1 compatible
The bq40z50-R2 device supports TURBO Mode 2.0 by providing
the available max power and max current to the host system. The device also supports Battery Trip
Point to send a BTP interrupt signal to the host system at the preset state of charge thresholds.
The bq40z50-R2 provides software-based 1st- and 2nd-level
safety protection against overvoltage, undervoltage, overcurrent, short-circuit current, overload,
and overtemperature conditions, as well as other pack- and cell-related faults.
SHA-1 authentication, with secure memory for authentication keys, enables identification
of genuine battery packs.
The compact 32-lead QFN package minimizes solution cost and size for smart batteries
while providing maximum functionality and safety for battery gauging applications.
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