BQ27Z746 Series
Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector
| Part | Battery Chemistry | Supplier Device Package | Supplier Device Package [y] | Supplier Device Package [x] | Package / Case | Number of Cells | Mounting Type | Interface | Operating Temperature [Max] | Operating Temperature [Min] | Fault Protection | Function |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ27Z746YAHR | Lithium Ion/Polymer | 15-DSBGA | 2.6 | 1.7 | 15-XFBGA, DSBGA | 1 | Surface Mount | I2C | 85 °C | -40 °C | Over Current, Over Temperature, Over/Under Voltage, Short Circuit | Fuel Gauge |
Key Features
• Integrated battery gas gauge and protectorFlash-programmable custom BQBMP RISC CPUSHA-256 authentication400-kHz I2C bus communications interfaceLow-voltage (2.0 V) operationTwo independent precision 16-bit ADCsCoulomb counting ADC with current sense resistor down to 1 mΩVoltage ADC for cell voltage and external andinternal temperature sensorsBattery fuel gauging based on patented Impedance Track™ technologyModels battery discharge curve for accurate time-to-empty predictionsAutomatically adjusts for aging-, temperature-, and rate-induced effects on the batteryBattery Kelvin sense differential analog output pins with built-in protectionHigh-side or low-side current sensingProgrammable hardware-based protectionHigh-side FET gate driversOvervoltage and undervoltage (OVP and UVP)Overcurrent in discharge and overcurrent in charge (OCD and OCC)Short circuit in discharge (SCD)Firmware-based overtemperature (OT)Reduced typical power modesSLEEP mode: 20 µASHIP mode: 10 µASHELF mode 5 µASHUTDOWN mode: 0.2 µAUltra-compact, 15-ball NanoFree™ DSBGAIntegrated battery gas gauge and protectorFlash-programmable custom BQBMP RISC CPUSHA-256 authentication400-kHz I2C bus communications interfaceLow-voltage (2.0 V) operationTwo independent precision 16-bit ADCsCoulomb counting ADC with current sense resistor down to 1 mΩVoltage ADC for cell voltage and external andinternal temperature sensorsBattery fuel gauging based on patented Impedance Track™ technologyModels battery discharge curve for accurate time-to-empty predictionsAutomatically adjusts for aging-, temperature-, and rate-induced effects on the batteryBattery Kelvin sense differential analog output pins with built-in protectionHigh-side or low-side current sensingProgrammable hardware-based protectionHigh-side FET gate driversOvervoltage and undervoltage (OVP and UVP)Overcurrent in discharge and overcurrent in charge (OCD and OCC)Short circuit in discharge (SCD)Firmware-based overtemperature (OT)Reduced typical power modesSLEEP mode: 20 µASHIP mode: 10 µASHELF mode 5 µASHUTDOWN mode: 0.2 µAUltra-compact, 15-ball NanoFree™ DSBGA
Description
AI
The Texas Instruments BQ27Z746 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge and protection solution.
The BQ27Z746 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, differential battery sensing analog output, and authentication for 1-series cell Li-ion and Li-polymer battery packs.
The BQ27Z746 gas gauge communicates through an I2C compatible interface and combines an ultra-low power TI BQBMP processor, high accuracy analog measurement capabilities, integrated flash memory, N-CH high-side FET drive, and a SHA-2 Authentication transform responder into a complete, high-performance battery management solution.
The Texas Instruments BQ27Z746 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge and protection solution.
The BQ27Z746 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, differential battery sensing analog output, and authentication for 1-series cell Li-ion and Li-polymer battery packs.
The BQ27Z746 gas gauge communicates through an I2C compatible interface and combines an ultra-low power TI BQBMP processor, high accuracy analog measurement capabilities, integrated flash memory, N-CH high-side FET drive, and a SHA-2 Authentication transform responder into a complete, high-performance battery management solution.