The bq28400 device is a fully integrated gas gauge and analog monitoring management solution that provides protection and control for 2-series cell Li-Ion battery packs in a single TSSOP package.
Implementing the optimum balance of quick response analog hardware-based monitoring and control along with an integrated fast CPU provides the ideal pack-based or in-system Li-Ion battery solution. The bq28400 also provides flexible user programmable settings stored in flash memory for control of critical system parameters such as overcurrent, short circuit, under/overvoltage, and over/undertemperature conditions.
The bq28400 communicates with the system host via a two-wire SMBus 1.1 compatible interface, providing high-accuracy reporting and control of battery pack operation. The FET drive and TSSOP package enable a lower cost and small footprint solution along with a simple layout and routing on narrow pack PCBs.
|Part number||Order||Number of series cells||Cell chemistry||Battery capacity (Max) (mAh)||Communication interface||Battery capacity (Min) (mAh)||External capacity indication||Implementation||Gas gauge algorithm||Features||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)|
||2-4 Cells||Li-Ion/Li-Polymer||32000||SMBus||500||Pack||CEDV||-40 to 85||TSSOP | 20||20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)|
|BQ28550||Samples not available||Single Cell||Li-Ion/Li-Polymer||6000||SMBus||300||None||Pack||CEDV||SHA-1 Authentication||-40 to 85||SON | 12||12SON: 10 mm2: 2.5 x 4 (SON | 12)|