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BQ2050H Status: ACTIVE

Li-Ion Gas Gauge With High-Speed 1-Wire (HDQ) Interface And 5 LED Drivers


      
         
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Datasheet

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 BQ2050H
Battery Capacity(Min)(mAh)500  
Battery Capacity(Max)(mAh)6000  
Communication InterfaceHDQ  
Pin/Package16SOIC  
Approx. Price (US$) 3.70 | 1ku  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BQ2050: Li-Ion Gas Gauge With 1-Wire (DQ) Interface And 5 LED Drivers
  • BQ2060A: Multi-Chemistry SBS 1.1 Compliant Gas Gauge With 5 LED Drivers, Additional Battery Mgmt Control
  • BQ27541: Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration
  • TPS54620: 4.5V to 17V Input, 6A Synchronous Step Down SWIFT™ Converter
  • BQ24103A: Standalone Synchronous Switch-mode Li-Ion Charger with 2A FET
  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE

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Product Information

Features

  • Accurate measurement of available capacity in Lithium Ion batteries
  • Provides a low-cost battery management solution for pack integration

    • - Complete circuit can fit in as little as 1/2 square inch of PCB
    - Low operating current (120uA typical)
    - Less than 100nA of data retention current
  • High-speed (5kb) single-wire communication interface (HDQ bus) for critical battery parameters
  • Monitors and controls charge FET in Li-Ion pack protection circuit
  • Direct drive of remaining capacity LEDs
  • Measurements automatically compensated for rate and temperature
  • 16-pin narrow SOIC

Description

The bq2050H Lithium Ion Power GaugeTM IC is intended for battery pack or in-system installation to maintain an accurate record of available battery capacity. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. Compensations for battery temperature, self discharge, and rate of discharge are applied to the charge counter to provide available capacity information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or "learned," in the course of a discharge cycle from full to empty.

Nominal available capacity may be directly indicated using a five-segment LED display. These segments are used to graphically indicate available capacity. The bq2050H also supports a simple single-line bidirectional serial link to an external processor (common ground). The 5kb HDQ bus interface reduces communications overhead in the external microcontroller.

Internal registers include available capacity, temperature, scaled available energy, battery ID, battery status, and Li-Ion charge FET status. The external processor may also overwrite some of the bq2050H power gauge data registers.

The bq2050H can operate from the batteries in the pack. The REF out-put and an external transistor allow a simple, inexpensive voltage regulator to supply power to the circuit from the cells.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2050HSN-A508ACTIVE0 to 704.05 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2050HSN-A508G4ACTIVE0 to 704.05 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2050HSN-A508TRACTIVE0 to 703.70 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2050HSN-A508TRG4ACTIVE0 to 703.70 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:08 PM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksBQ2050HSN-A508
AmericasAvnet 24
Rochester Electronics 210
AsiaWPI 148
EuropeSpoerle 150
WorldwideDigiKey 78
Mouser Electronics 83
TI Lead Time*: 4 WeeksBQ2050HSN-A508G4
AmericasRochester Electronics 235
AsiaFarnell Asia 199
EuropeEBV Elektronik 20
Farnell 195
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ2050HSN-A508TR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ2050HSN-A508TRG4
WorldwideDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
BQ2050HSN-A508 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050HSN-A508G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050HSN-A508TR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050HSN-A508TRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ2050H Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

Tools & Software

NamePart # Company Tool / Software Type
BQ2050H Evaluation Kit for Li-Ion, 10.8VBQ2050HEVM-002Texas InstrumentsDevelopment Boards/EVMs
EV2200 PC Interface BoardEV2200Texas InstrumentsDevelopment Boards/EVMs

Part # Name Product Family Comments
BQ29400   2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection)   BATTERY MANAGEMENT - LITHIUM ION PROTECTION   Overvoltage Protection for 2-, 3-, or 4 Cell LiIon and LiPoly Batteries (2nd level Protection)    
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