BQ28Z620 Series
Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Fault Protection | Mounting Type | Supplier Device Package | Package / Case | Number of Cells [Min] | Number of Cells [Max] | Interface | Battery Chemistry | Function |
|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ28Z620DRZR | 85 °C | -40 °C | Over Current, Over Temperature, Over Voltage | Surface Mount | 12-VSON (2.5x4) | 12-VFDFN Exposed Pad | 1 | 2 | I2C | Lithium Ion/Polymer | Battery Balancing |
Key Features
• Autonomous battery charging control, using a dedicated MASTER mode I2C interface400-kHz I2C bus communications interface, including a 1.2-V logic level for high-speed programming and data accessCell balancing with an internal bypass to optimize battery healthA high-side protection N-CH FET drive enables serial bus communication during fault conditionsProgrammable protection levels for voltage, current, and temperatureAnalog front-end with two independent ADCsSupport for simultaneous current and voltage samplingHigh-accuracy coulomb counter with input offset error < 1 µV (typical)Supports down to 0.5-mΩ current sense resistor while capable of 1-mA current measurementSHA-1 authentication responder for increased battery pack securityCompact 12-pin VSON package (DRZ)Autonomous battery charging control, using a dedicated MASTER mode I2C interface400-kHz I2C bus communications interface, including a 1.2-V logic level for high-speed programming and data accessCell balancing with an internal bypass to optimize battery healthA high-side protection N-CH FET drive enables serial bus communication during fault conditionsProgrammable protection levels for voltage, current, and temperatureAnalog front-end with two independent ADCsSupport for simultaneous current and voltage samplingHigh-accuracy coulomb counter with input offset error < 1 µV (typical)Supports down to 0.5-mΩ current sense resistor while capable of 1-mA current measurementSHA-1 authentication responder for increased battery pack securityCompact 12-pin VSON package (DRZ)
Description
AI
The Texas Instruments BQ28Z620 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 BQ28Z620 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 BQ28Z620 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 BQ28Z620 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.
The Texas Instruments BQ28Z620 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 BQ28Z620 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 BQ28Z620 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 BQ28Z620 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.