Single-cell authentication with Impedance Track
The Texas Instruments BQ27350PWRG4 is a battery authentication IC from the Impedance Track series, designed for single-cell (1-cell) Lithium Ion/Polymer packs. It communicates over an I²C interface, allowing the host to verify the pack's authenticity before enabling charge or discharge.
Housed in a 20-TSSOP package (4.40 mm width), the BQ27350PWRG4 is a surface-mount component suited for reflow assembly. The 0.65 mm pin pitch on the TSSOP body is a standard footprint that routes out on two-layer boards without via-in-pad. The supplier device package is listed as 20-TSSOP, matching the package/case specification. Tape & Reel (TR) packaging supports automated pick-and-place for volume production.
Active lifecycle and sourcing
The base product number is BQ27350, so variant suffixes (PWRG4) indicate packaging and environmental grade.