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BQ27505 Status: NRND

System-Side Impedance Track™ Fuel Gauge


      
         
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Alert Icon   NRND: This product is not recommended for new designs. However, the device, tool, or software continues to be in production to support existing customers. TI does not recommend using this part in a new design. TI encourages designers to consider alternative products for new designs.

Replaced By:

  • BQ27505-J2 The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device. 

Datasheet

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Functional Block Diagram


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 BQ27505-J2 
Communication InterfaceI2C  
# Series Cells1  
Pin/Package12DSBGA  
Approx. Price (US$) 1.40 | 1ku  
 Samples
 Inventory

Product Information

Features

  • Battery Fuel Gause for 1-Seires Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Uses PACK+, PACK\x96, and T Battery Terminals
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for Battery Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Configurable Level of State of Charge (SOC) Interrupts
    • State of Health Indicator
    • 96 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track™ Technology
    • Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (10 m or Less)
  • 400KHz I2C™ Interface for Connection to System Microcontroller Port
  • In a 12-Pin NanoFree™ (CSP) Packaging
  • APPLICATIONS
    • Smartphones

View All Features in Datasheet

Description

The Texas Instruments bq27505 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requeires little system microcontroller firmware development. The bq27505 resides on the system's main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27505 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).

Battery fuel gauging with the bq27505 requires only PACK+ (P+), PACK\x96 (P\x96), and Thermistor (T) connections to a removable battery pack or embedded battery circuit.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSamples
BQ27505YZGR-J1NRND-40 to 851.45 | 1kuDSBGA (YZG) | 12 3000 | LARGE T&RNot Available
BQ27505YZGT-J1NRND-40 to 851.60 | 1kuDSBGA (YZG) | 12 250 | SMALL T&RNot Available

* 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 12:15 PM GMT, 25 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ27505YZGR-J1
AsiaWPI >1k
EuropeCompel 10
WorldwideDigiKey 25
TI Lead Time*: 20 WeeksBQ27505YZGT-J1
AmericasArrow 250
Avnet 250
Newark 250
AsiaFarnell Asia 250
EuropeArrow Northern Europe 250
Avnet-SILICA 250
Farnell 250
Spoerle 250
WorldwideDigiKey  Available
Mouser Electronics 240
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
BQ27505YZGR-J1  Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIMViewView
BQ27505YZGT-J1      View

* 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 BQ27505 Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

White Papers

Tools & Software

NamePart # Company Tool / Software Type
BQ27505 System-Side, Single-Cell Impedance Track™ Technology Evaluation ModuleBQ27505EVMTexas InstrumentsDevelopment Tools

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