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BQ27500 Status: NRND

System-Side Impedance Track(TM) Fuel Gauge

      
         
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Product is Not Recommended for New Design (NRND)

Replaced By:

  • BQ27500-V100 The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device. 

Datasheet

Download - PDF Icon
  • System-Side Impedance-Track Fuel Gauge (Rev. D) (bq27500.pdf, 1000 KB)
    25 Apr 2008 Download
  • bq27500 Errata (Rev. B) (sluz015b.pdf, 70 KB)
    15 Sep 2008 Download

 BQ27500-V100 BQ27501 
Charge vs Discharge RelationshipC=D  C=D  
Communication InterfaceI2C   
Pin/Package12SON  12SON  
Approx. Price (US$) 1.35 | 1ku   
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ27200: Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC with I2C Interface
  • BQ27510: System Side Impedance Track Fuel Gauge with Integrated LDO
  • TPS65021: 6-channel Power Mgmt IC with 3DC/DCs, 3 LDOs, I2C interface and Dynamic Voltage Scaling
  • TL431B: Adjustable Precision Shunt Regulator
  • BQ2000: Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination

Product Information

Features

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Two Varieties
    • bq27500: Uses PACK+, PACK–, and T Battery Terminals
    • bq27501: Works With Battery ID Resistor in Battery Pack
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for System Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Battery ID Detection
    • 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)
  • I2C™ Interface for Connection to System Microcontroller Port
  • 12-Pin 2,5-mm × 4-mm SON Package
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track is a trademark of Texas Instruments.
I2C is a trademark of Philips Electronics.

Description

The Texas Instruments bq27500/01 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. The bq27500/01 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.

The bq27500/01 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), and temperature (°C).

Battery fuel gauging with the bq27500 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery. The bq27501 works with identification resistors in battery packs to gauge batteries of different fundamental chemistries and/or significantly different rated capacities.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Replaced ByPrice | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsSamples
BQ27500DRZRNRND-40 to 85BQ27500DRZT-V1002.00 | 1kuSON (DRZ) | 12 3000 | LARGE T&R Download CAD Format for this SymbolReplaced by BQ27500DRZT-V100
BQ27500DRZTNRND-40 to 85BQ27500DRZT-V1002.20 | 1kuSON (DRZ) | 12 250 | SMALL T&R Download CAD Format for this SymbolReplaced by BQ27500DRZT-V100

* 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

  TI Inventory Status Reported Distributor Inventory
BQ27500DRZRAs of 9:18 AM GMT, 15 Oct 2008As of 9:18 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 3000* >10k | 9 Dec 6 Weeks None Reported
View Distributors		   
BQ27500DRZTAs of 9:18 AM GMT, 15 Oct 2008As of 9:18 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 3189* >10k | 9 Dec 6 Weeks AmericasArrow 500
  Avnet 235
  DigiKey >1k
  Mouser Electronics >1k
  Newark 221
  AsiaWPI 145
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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
BQ27500DRZR  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ27500DRZT  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

Datasheets

  • System-Side Impedance-Track Fuel Gauge (Rev. D) (bq27500.pdf, 1000 KB)
    25 Apr 2008 Download
  • bq27500 Errata (Rev. B) (sluz015b.pdf, 70 KB)
    15 Sep 2008 Download

Application Notes

  • Single Cell Gas Gauge Application Book (slua458.htm, 8 KB)
    28 Jul 2008 Abstract
  • Updating Firmware with the bq2750x and EVM (Rev. A) (slua453a.htm, 8 KB)
    22 Jul 2008 Abstract
  • Going to Production with the bq2750x (Rev. B) (slua449b.htm, 8 KB)
    09 Jul 2008 Abstract
  • Using I2C™ Communication with the bq275xx Series of Fuel Gauges (slua467.htm, 8 KB)
    15 May 2008 Abstract
  • Feature Set Comparison of bq27x00, bq27x10, bq27500 and bq27510 (slua461.htm, 8 KB)
    21 Mar 2008 Abstract
  • Impedance Track Fuel Gauge Accuracy Test for GSM Phone Applications (slua455.htm, 8 KB)
    21 Mar 2008 Abstract
  • Single Cell Impedance Track Printed-Circuit Board Layout (slua457.htm, 8 KB)
    22 Feb 2008 Abstract
  • Single Cell Gas Gauge Circuit Design (slua456.htm, 8 KB)
    22 Feb 2008 Abstract
  • Configuring the bq27500 Data Flash (Rev. A) (slua432a.htm, 8 KB)
    01 Feb 2008 Abstract
  • Theory and implementation of Impedance Track battery fuel-gauging algorithm... (slua450.htm, 8 KB)
    31 Jan 2008 Abstract
  • Quick Start Guide for bq2750x Family Gas Gauge (slua448.htm, 8 KB)
    23 Jan 2008 Abstract
  • Key Design Considerations for the bq27500 and bq27501 (slua439.htm, 8 KB)
    30 Oct 2007 Abstract
  • Host-side gas-gauge-system design considerations for single-cell handheld apps (slyt285.pdf, 152 KB)
    12 Oct 2007 Download
  • Q4 2007 Issue Analog Applications Journal  (slyt282.pdf, 325 KB)
    12 Oct 2007 Download

View Application Notes for Battery Fuel Gauges

User Guides

  • bqEASY for Single Cell Impedance Track TM Devices (Rev. A) (sluu307a.pdf, 1041 KB)
    04 Apr 2008 Download
  • bq27500 EVM (HPA219 Rev. A) Errata (sluz016.pdf, 154 KB)
    08 Nov 2007 Download
  • bq2750xEVM System Side Single-Cell Impedance Track™ (sluu287.htm, 8 KB)
    24 Oct 2007 Abstract

Simulation Models

  • IBIS Model
    • bq275xx IBIS Model (sluc119.zip, 14 KB)
      06 Oct 2008 zip

White Papers

  • Impedance Track Based Fuel Gauging  (slpy002.pdf, 271 KB)
    27 Sep 2007  Download

More Literature

  • Quick Start Guide for bq27500/1EVM Kit (sluu298.htm, 8 KB)
    24 Oct 2007 Abstract
  • Video Introducing Impedance Track Battery Fuel Gauge bq27500 (sluc077.wmv, 11847 KB)
    20 Sep 2007 wmv

Tools & Software

NamePart # Company Tool / Software Type
System-Side Impedance Track(TM) Fuel Gauge Evaluation ModuleBQ27500EVMTexas InstrumentsDevelopment Boards/EVMs
bqEASY(TM) For Single Cell Impedance Track(TM) DevicesBQEASY-SW Texas Instruments Application Software 

 Alternative Products - Are similar to BQ27500
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
BQ27200Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC with I2C InterfaceTI customers also evaluated this product.
BQ27510System Side Impedance Track Fuel Gauge with Integrated LDO TI customers also evaluated this product.
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