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bq78z100 Datasheet Gas Gauge

Manufacturer: Texas Instruments

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General Description

The bq78z100 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication for 1-series to 2-series cell Li-Ion and Li-Polymer battery packs.

The bq78z100 gas gauge communicates via an I2Ccompatible interface or single-wire HDQ interface and combines an ultra-low-power, high-speed TI bqBMP processor, high-accuracy analog measurement capabilities, integrated flash memory, an array of peripheral and communication ports, an N-channel FET drive, and a SHA-1 Authentication transform responder into a complete, high-performance battery management solution.

The bq78z100 device provides an array of battery and system safety functions, including overcurrent in discharge, short circuit in charge, and short circuit in discharge protection for the battery, as well as FET protection for the N-channel FETs, internal

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq78z100 SLUSC23 – SEPTEMBER 2015 bq78z100 Impedance Track™ Gas Gauge for 1-Series to 2-Series Li-Ion/Li-Polymer Battery Packs Check.

Key Features

  • 1 High-Accuracy Coulomb Counter with Input Offset Error < 1 µV (Typical).
  • High-Side FET Drive Allows Serial Bus Communication During Fault Conditions.
  • Analog Front End with Two Independent ADCs.
  • Support for Simultaneous Current and Voltage Sampling.
  • Bus Communications Interface Options.
  • I2C.
  • HDQ.
  • SHA-1 Hash Message Authentication Code (HMAC) Responder for Increased Battery Pack Security.
  • Split Key (2 × 64) Stored in.

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