bq78z100 Overview
Key Specifications
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.
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 ×
- Stored in Secure Memory
- Supports a 1-mΩ to 3-mΩ Current Sense Resistor
- Compact 12-Terminal SON Package (DRZ)
