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BQ27Z561-R1 - Battery Gas Gauge

General Description

The Texas Instruments BQ27Z561-R1 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for li-ion and lipolymer battery packs.

Key Features

  • Supports high-side and low-side current sense resistors down to 1 mΩ.
  • Supports pack-side gauging including enhanced state of health (SOH) algorithm.
  • Fast QMAX update option based on predicted OCV.
  • SHA-256 authentication responder for increased battery pack security.
  • Sophisticated charge algorithms:.
  • JEITA.
  • Enhanced charging.
  • RSOC() charging compensation option.
  • Two independent ADCs.
  • Support for simultaneou.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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BQ27Z561-R1 SLUSDH5B – MARCH 2019 – REVISED DECEMBER 2022 BQ27Z561-R1 Impedance Track™ Battery Gas Gauge Solution for 1-Series Cell Li-Ion Battery Packs 1 Features • Supports high-side and low-side current sense resistors down to 1 mΩ • Supports pack-side gauging including enhanced state of health (SOH) algorithm • Fast QMAX update option based on predicted OCV • SHA-256 authentication responder for increased battery pack security • Sophisticated charge algorithms: – JEITA – Enhanced charging – RSOC() charging compensation option • Two independent ADCs – Support for simultaneous current and voltage sampling – High-accuracy coulomb counter with input offset error < 1 µV (typical) • Low-voltage (2-V) operation • Wide-range current applications (1 mA to > 5 A) • Active high or low pulse or l