SBS 1.1 Compliant Gas Gauge With Integrated Oscillator For Use With The Bq29311

The BQ2085 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The BQ2085 monitors capacity and other critical parameters of the battery pack and reports the information to the system host controller over a serial Communication bus. It is designed to work with the BQ29311 Analog front-end (AFE) protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the BQ2085 the host controller CAN manage remaining battery power to extend the system run time as much as possible.
The BQ2085 uses an integrating converter with continuous sampling for the measurement of battery charge and discharge currents. Optimized for coulomb counting in portable applications, the self-calibrating integrating converter has a resolution better than 3-nVh and an offset measurement error of less than 1-uV (typical). For voltage and temperature reporting, the BQ2085 uses a 16-bit A-to-D converter. In conjunction with the BQ29311 the onboard ADC also monitors individual cell voltages in a battery pack and allows the BQ2085 to generate the control signals necessary to implement the cell balancing and the required safety protection for Li-ion and Li-polymer battery chemistries.
The BQ2085 supports the Smart Battery Data (SBData) commands and charge-control functions. It communicates data using the System Management Bus (SMBus) 2-wire protocol. The data available include the battery?s remaining capacity, temperature, voltage, current, and remaining run-time predictions. The BQ2085 provides LED Drivers and a push-button input to depict remaining battery capacity from full to empty in 20%, 25%, or 33% increments with a 3-, 4-, or 5-segment Display
The BQ2085 contains 512 bytes of internal data Flash memory, which store configuration information. The information includes nominal capacity and voltage, self-discharge rate, rate compensation factors, and other programmable cell-modeling factors used to accurately adjust remaining capacity for use-conditions based on time, rate, and temperature. The BQ2085 also automatically calibrates or learns the true battery capacity in the course of a discharge cycle from programmable near full to near empty levels.
The BQ29311 AFE protection IC provides power to the BQ2085 from a 3 or 4 series Li-ion cell stack, eliminating the need for an external Regulator circuit.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
BQ2085DBT-V1P3 Texas Instruments SBS-Compliant Gas Gauge IC For Use With The bq29311 38-TSSOP -20 to 85
BQ2085DBTR-V1P3 Texas Instruments SBS-Compliant Gas Gauge IC For Use With The bq29311 38-TSSOP -20 to 85
BQ2085DBTR-V1P2G4 Texas Instruments 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, GREEN, PLASTIC, TSSOP-38
BQ2085DBT-V1P3G4 Texas Instruments SBS-Compliant Gas Gauge IC For Use With The bq29311 38-TSSOP -20 to 85
BQ2085DBT Texas Instruments SBS 1.1 Compliant Gas Gauge With Integrated Oscillator For Use With The bq29311 38-TSSOP -20 to 85
BQ2085DBTR-V1P3G4 Texas Instruments SBS-Compliant Gas Gauge IC For Use With The bq29311 38-TSSOP -20 to 85
BQ2085DBTG4 Texas Instruments 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, GREEN, PLASTIC, TSSOP-38
BQ2085DBTR Texas Instruments 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, GREEN, PLASTIC, SM-8, 38 PIN
BQ2085DBTRG4 Texas Instruments 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, GREEN, PLASTIC, TSSOP-38
BQ2085-V1P3DBT Texas Instruments 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, PLASTIC, TSSOP-38
BQ2085 's PackagesBQ2085 's pdf datasheet
BQ2085DBT SM8
BQ2085DBTG4 SM8
BQ2085DBTR SM8
BQ2085DBTRG4 SM8




BQ2085 Pinout, Pinouts
BQ2085 pinout,Pin out
This is one package pinout of BQ2085,If you need more pinouts please download BQ2085's pdf datasheet.

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