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bq20z40 Datasheet SBS 1.1-COMPLIANT GAS GAUGE

Manufacturer: Texas Instruments

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General Description

The bq20z40 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation.

The bq20z40 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals.

The bq20z40 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus.

Overview

Not Recommended for New Designs bq20z40 www.ti.com SLUS801A – FEBRUARY 2009 – REVISED MARCH 2009 SBS 1.

Key Features

  • 1.
  • 2 Next Generation Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries.
  • Better Than 1% Error Over the Lifetime of the Battery.
  • Supports the Smart Battery Specification SBS V1.1.
  • Flexible Configuration for 2 to 4 Series Li-Ion and Li-Polymer Cells.
  • Powerful 8-Bit RISC CPU With Ultralow Power Modes.
  • Full Array of Programmable Protection Features.
  • Voltage, Current, and Temperatur.

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