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BQ2084DBT-V150 |BQ2084DBTV150TI/BBN/a50avaiSBS v1.1 Compliant Gas Gauge with LED Delay 38-TSSOP -20 to 85
BQ2084DBT-V150 |BQ2084DBTV150TI Pb-freeN/a225avaiSBS v1.1 Compliant Gas Gauge with LED Delay 38-TSSOP -20 to 85


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BQ2084DBT-V150
SBS v1.1 Compliant Gas Gauge with LED Delay 38-TSSOP -20 to 85
DBT
www.ti.com
FEATURES DESCRIPTION
APPLICATIONS
bq2084-V150
SLUS758–JUNE 2007
SBS v1.1-COMPLIANT GAS GAUGE WITH
LED DELAY
Provides Accurate Measurementof Available The bq2084-V150 SBS-compliant gas gauge IC forChargein Li-Ion and Li-Polymer Batteries battery packor in-system installation maintains an
accurate record of available charge in Li-ion or• Supports the Smart Battery Specification
Li-polymer batteries. The bq2084-V150 monitors(SBS) V1.1 capacity and other critical parametersof the battery• Integrated Time Base Removes Need for pack and reports the informationto the system hostExternal Crystal with Optional Crystal input controller overa serial communication bus.Itis• Works With theTI bq29312A Analog designedto work with the bq29312A AFE protectionto maximize functionality and safety and minimizeFront-End (AFE) ProtectionICto Provide
component count and costin smart battery circuits.Complete Pack Electronics for 7.2-V, 10.8-Vor
Using information from the bq2084-V150, the host14.4-V Battery Packs With Few External controller can manage remaining battery powertoComponents extend the system run timeas muchas possible.• Based ona Powerful Low-Power RISC CPU
The bq2084-V150 usesan integrating converter withCore With High-Performance Peripherals continuous sampling for the measurementof battery• Integrated Flash Memory Eliminates the Need charge and discharge currents. Optimized forfor External Configuration EEPROM coulomb counting in portable applications, the• Uses 16-Bit Delta Sigma Converter for self-calibrating integrating converter hasa resolution
Accurate Voltage and Temperature
better than 0.65-nVh and an offset measurement
errorof less than 1-µV (typical). For voltage andMeasurements
temperature reporting, the bq2084-V150 usesa• Measures Charge Flow Usinga High 16-bit A-to-D converter. With the bq29312A, theResolution 16-Bit Integrating Converter onboard ADC also monitors the pack and individual– Better Than 0.65-nVhof Resolution cell voltages ina battery pack and allows the
bq2084-V150 to generate the control signals– Self-Calibrating
necessaryto implement the cell balancing and the– Offset Error Less Than 1-µV required safety protection for Li-ion and Li-polymer• Programmable Cell Modeling for Maximum battery chemistries.Battery Fuel Gauge Accuracy The bq2084-V150 supports the Smart Battery Data• Drives3-, 4-,or 5-Segment LED Display for (SBData) commands and charge-control functions.ItRemaining Capacity Indication communicates data using the System Management• Availableina 38-Pin TSSOP (DBT) Package Bus (SMBus) 2-wire protocol. The data available
include the battery's remaining capacity,
temperature, voltage, current, and remaining
run-time predictions.• Notebook PCs
The bq2084-V150 provides LED drivers anda• Medical and Test Equipment
pushbutton inputto depict remaining battery capacity• Portable Instrumentation from fullto emptyin 20%, 25%,or 33% increments
witha 3-, 4-,or 5-segment display.
Not Recommended For New Designs
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