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, providing

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-low-power, high-speed TI BQBMP processor,

high-accuracy 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.