BQ27Z561-R2 Series
Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
Manufacturer: Texas Instruments
Catalog
Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
Key Features
• Supports high-side and low-side current sense resistors down to 1 mΩSupports pack-side gauging including enhanced state of health (SOH) algorithmFast QMax update option based on predicted OCVSHA-256 authentication responder for increased battery pack securitySophisticated charge algorithmsJEITAEnhanced chargingRSOCcharging compensation optionTwo independent ADCsSupport for simultaneous current and voltage samplingHigh-accuracy coulomb counter with input offset error < 1 µV (typical)Low-voltage (2-V) operationWide-range current applications (1 mA to > 5 A)Active high or low pulse or level interrupt pinSupports battery trip point (BTP)Reduced power modes (typical battery pack operating range conditions)Typical SLEEP mode: < 11 µATypical DEEP SLEEP mode: < 9 µATypical HIBERNATE mode: < 3 µATypical OFF mode: < 1.9 µAInternal and external temperature sense functionsDiagnostic lifetime data monitor and black box recorder400-kHz I2C bus communications interface for high-speed programming and data accessHDQ one-wire for communication with hostCompact 12-pin DSBGA package (YPH)Supports high-side and low-side current sense resistors down to 1 mΩSupports pack-side gauging including enhanced state of health (SOH) algorithmFast QMax update option based on predicted OCVSHA-256 authentication responder for increased battery pack securitySophisticated charge algorithmsJEITAEnhanced chargingRSOCcharging compensation optionTwo independent ADCsSupport for simultaneous current and voltage samplingHigh-accuracy coulomb counter with input offset error < 1 µV (typical)Low-voltage (2-V) operationWide-range current applications (1 mA to > 5 A)Active high or low pulse or level interrupt pinSupports battery trip point (BTP)Reduced power modes (typical battery pack operating range conditions)Typical SLEEP mode: < 11 µATypical DEEP SLEEP mode: < 9 µATypical HIBERNATE mode: < 3 µATypical OFF mode: < 1.9 µAInternal and external temperature sense functionsDiagnostic lifetime data monitor and black box recorder400-kHz I2C bus communications interface for high-speed programming and data accessHDQ one-wire for communication with hostCompact 12-pin DSBGA package (YPH)
Description
AI
The Texas Instruments BQ27Z561 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-Ion and Li-Polymer battery packs. The 1-series cell capability includes parallel cells for increased capacity.
The BQ27Z561 gas gauge communicates via I2C-compatible and HDQ one-wire interfaces and includes several key features that can help facilitate accurate gas gauging applications. Integrated temperature sense functions (internal and external options) enable system and battery temperature measurements. The integrated SHA-256 functionality helps enable secure identification between systems and packs. The interrupt function facilitates the BQ27Z561 device to inform the system when a state-of-charge (SOC), voltage, or temperature fault occurs. The low-voltage operation enables the system to continue monitoring the battery even in deeply discharged conditions. During low-activity situations, the device can be set to the low power coulomb counting (CC) mode, which allows the device to continue its coulomb counting while reducing operating current significantly.
The Texas Instruments BQ27Z561 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-Ion and Li-Polymer battery packs. The 1-series cell capability includes parallel cells for increased capacity.
The BQ27Z561 gas gauge communicates via I2C-compatible and HDQ one-wire interfaces and includes several key features that can help facilitate accurate gas gauging applications. Integrated temperature sense functions (internal and external options) enable system and battery temperature measurements. The integrated SHA-256 functionality helps enable secure identification between systems and packs. The interrupt function facilitates the BQ27Z561 device to inform the system when a state-of-charge (SOC), voltage, or temperature fault occurs. The low-voltage operation enables the system to continue monitoring the battery even in deeply discharged conditions. During low-activity situations, the device can be set to the low power coulomb counting (CC) mode, which allows the device to continue its coulomb counting while reducing operating current significantly.
