BQ27426 Series
Single cell System-side battery fuel (gas) gauge w/Pre-programmed chemistry Profile
Manufacturer: Texas Instruments
Catalog
Single cell System-side battery fuel (gas) gauge w/Pre-programmed chemistry Profile
Key Features
• Single-cell Li-ion battery fuel gaugeResides on system boardSupports embedded or removable batteriesPowers directly from the battery with integrated LDOSupports a low-value external sense resistor (10 mΩ)Ultra low 9 µA operating current when the load is below 10 mA, set by Sleep Current threshold.Battery fuel gauging based on patented Impedance Track™ technologyProvides three selectable preprogrammed profiles for 4.2-V, 4.35-V, and 4.4-V cellsReports remaining capacity and state-of-charge (SOC) with smoothing filterAdjusts automatically for battery aging, self-discharge, temperature, and rate changesEstimates battery state-of-health (aging)Microcontroller peripheral interface supports:400-kHz I 2C serial interfaceConfigurable SOC interrupt or battery low digital output warningInternal temperature sensor or host reported temperature or external thermistorSingle-cell Li-ion battery fuel gaugeResides on system boardSupports embedded or removable batteriesPowers directly from the battery with integrated LDOSupports a low-value external sense resistor (10 mΩ)Ultra low 9 µA operating current when the load is below 10 mA, set by Sleep Current threshold.Battery fuel gauging based on patented Impedance Track™ technologyProvides three selectable preprogrammed profiles for 4.2-V, 4.35-V, and 4.4-V cellsReports remaining capacity and state-of-charge (SOC) with smoothing filterAdjusts automatically for battery aging, self-discharge, temperature, and rate changesEstimates battery state-of-health (aging)Microcontroller peripheral interface supports:400-kHz I 2C serial interfaceConfigurable SOC interrupt or battery low digital output warningInternal temperature sensor or host reported temperature or external thermistor
Description
AI
The Texas Instruments BQ27426 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up.
Three chemistry profiles are preprogrammed to enable minimum user-configuration, and to help manage customer inventory across projects with different battery chemistries. The BQ27426 battery fuel gauge has very low sleep power consumption leading to longer battery run time. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.
The BQ27426 battery fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).
Battery fuel gauging with the BQ27426 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 9-ball, 1.62 mm × 1.58 mm, 0.5 mm pitch NanoFree™ chip scale package (DSBGA) is ideal for space-constrained applications.
The Texas Instruments BQ27426 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up.
Three chemistry profiles are preprogrammed to enable minimum user-configuration, and to help manage customer inventory across projects with different battery chemistries. The BQ27426 battery fuel gauge has very low sleep power consumption leading to longer battery run time. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.
The BQ27426 battery fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).
Battery fuel gauging with the BQ27426 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 9-ball, 1.62 mm × 1.58 mm, 0.5 mm pitch NanoFree™ chip scale package (DSBGA) is ideal for space-constrained applications.
