BQ28Z610DRZR-R1

1 Features

• Autonomous battery charging control, using a dedicated MASTER mode I2C interface

• Cell balancing with an internal bypass to optimize battery health

• A high-side protection N-CH FET drive enables serial bus communication during fault conditions

• Programmable protection levels for voltage, current, and temperature

• Analog front-end with two independent ADCs

– Support for simultaneous current and voltage sampling

– High-accuracy coulomb counter with input offset error < 1 µV (typical)

• Supports down to 1-mΩ current sense resistor while capable of 1-mA current measurement

• Supports battery trip point (BTP) function for Windows® integration

• SHA-1 authentication responder for increased battery pack security

• 400-kHz I2C bus communications interface for high-speed programming and data access

• Compact 12-pin VSON package (DRZ)

2 Applications

• Tablet computing

• Portable and wearable health devices

• Portable audio devices

– Wireless (bluetooth) speakers

3 Description

The Texas Instruments BQ28Z610-R1 device is a highly integrated, accurate, 1-series to 2-series cell gas gauge and protection solution, enabling autonomous charger control and cell balancing.

The BQ28Z610-R1 device enables autonomous charge control through Master Mode I2C broadcasts of charging current and voltage information, eliminating software overhead that is typically incurred by the system's host controller.

The BQ28Z610-R1 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication for 1- to 2-series cell Li-Ion and Li-Polymer battery packs.

The BQ28Z610-R1 gas gauge communicates via an I2C compatible interface and combines an ultra-lowpower, high-speed TI BQBMP processor, highaccuracy analog measurement capabilities, integrated flash memory, an array of peripheral and communication ports, an N-CH FET drive, and a SHA-1 Authentication transform responder into a complete, high-performance battery management solution.

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