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Complete battery fuel gauge for One and Two cell Li-ion applications

Replaced by: BQ27220YZFR


Qty Price (USD)
1-99 13.806
100-249 11.255
250-999 8.846
1,000+ 7.503

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Export classification

  • US ECCN: EAR99

Packaging information

Package | Pins TSSOP (PW) | 8
Package qty | Carrier: 100 | TUBE
Operating temperature range (°C) 0 to 70
View TI packaging information

Features for the BQ26500

  • Reports Accurate State-of-Charge in Li-Ion and Li-Pol Cells, No System Processor Calculations Needed
  • Reports Cell Temperature and Voltage
  • High-Accuracy Coulometric Charge and Discharge Current Integration with Automatic Offset Cancellation
  • Requires No Offset Calibration
  • Programmable Input/Output Port
  • Internal Time-Base Eliminates External Crystal Oscillator
  • Four Automatic Low-Power Operating Modes
    • Active: < 100 µA
    • Sleep: < 2.5 µA
    • Ship: < 1.7 µA
    • Hibernate: < 1.5 µA
  • Small 8-Pin TSSOP Package
    • PDAs
    • Smart Phones
    • MP3 Players
    • Digital Cameras
    • Internet Appliances
    • Handheld Devices

Description for the BQ26500

The bq26500, the first in the bqJUNIOR™ family of advanced gas gauge device for handheld applications, is a highly accurate standalone single-cell Li-Ion and Li-Pol battery capacity monitoring and reporting device targeted at space limited portable applications. The device monitors a voltage drop across a small current sense resistor connected in series with the battery 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 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. Internal registers include available capacity, cell temperature and voltage, state-of-charge, and status and control registers.

The bq26500 can operate directly from single-cell Li-Ion and Li-Pol batteries and communicates to the system over a simple one-wire bi-directional serial interface. The 5-kbits/s HDQ bus interface reduces communication overhead in the external microcontroller.


Qty Price (USD)
1-99 13.806
100-249 11.255
250-999 8.846
1,000+ 7.503

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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