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BQ2082DB-T, BQ2082DBTR, BQ2083

Table of contents:
Info of BQ2082DB-T
Info of BQ2082DBTR
Info of BQ2083

BQ2082DB-T, BQ2082DBTR, BQ2083 Selling Leads, Datasheet

MFG:BENCHMAR Package Cooled:N/A D/C:10

BQ2082DB-T, BQ2082DBTR, BQ2083 Datasheet download

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Part Number: BQ2082DB-T

MFG: BENCHMAR

Package Cooled: N/A

D/C: 10

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BQ2083 General Description

The bq2083-V1P2 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 bq2083-V1P2 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 bq2083-V1P2, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2083-V1P2 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-V (typical). For voltage and temperature reporting, the bq2083-V1P2 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 bq2083-V1P2 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 bq2083-V1P2 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 bq2083-V1P2 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 bq2083-V1P2 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 apacity for use-conditions based on time, rate, and temperature. The bq2083-V1P2 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 bq2083-V1P2 from a 3 or 4 series Li-ion cell stack, eliminating the need for an external gulator circuit.

BQ2083 Maximum Ratings

		UNIT
Supply voltage range, V_DD relative to V_SS		-0.3 V to 6 V
Open-drain I/O pins, V_(IOD) relative to V_SS		-0.3 V to 6 V
Input voltage range to all other pins, V_I relative to V_SS		-0.3 V to VDD + 0.3 V
ESDS RatingESDS Rating	HBM	1.5 kV
	CDM	1.5 kV
	MM	50V
Operating free-air temperature range, T_A		-20 to 85
Storage temperature range, T_stg		-65 to 150

BQ2083 Features

Provides Accurate Measurement of Available Charge in Li-Ion and Li-Polymer Batteries
Supports the Smart Battery Specification (SBS) V1.1
Works With the TI bq29311 Analog Front End (AFE) Protection IC to Provide Complete Pack Electronics for 10.8-V or 14.4-V Battery Packs With Few External Components
Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
Integrated Flash Memory Eliminates the Need for External Configuration
EEPROM Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
- Better Than 3-nVh of Resolution
- Self-Calibrating
- Offset Error Less Than 1-V
Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
38-Pin TSSOP (DBT)

BQ2083 Connection Diagram

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