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1-4 Series Li-Ion Battery Pack Manager | Battery Fuel (Gas) Gauge


Package | PIN: RSM | 32
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $4.63
10-24 $4.16
25-99 $3.89
100-249 $3.49
250-499 $3.25
500-749 $2.83
750-999 $2.45
1000+ $2.40


  • Fully Integrated 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion or Li-Polymer Cell Battery Pack Manager and Protection
  • Next-Generation Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
  • High Side N-CH Protection FET Drive
  • Integrated Cell Balancing While Charging or At Rest
  • Suitable for Batteries Between 100 mAh and 29 Ah
  • Full Array of Programmable Protection Features
    • Voltage
    • Current
    • Temperature
    • ChargeTimeout
    • AFE
  • Sophisticated Charge Algorithms
    • JEITA
    • EnhancedCharging
    • Adaptive Charging
    • CellBalancing
  • Supports TURBO Mode 2.0
  • Supports Battery Trip Point (BTP)
  • Diagnostic Lifetime Data Monitor and Black Box Recorder
  • LED Display
  • Supports Two-Wire SMBus v1.1 Interface
  • SHA-1 Authentication
  • IATA Support
  • Compact Package: 32-Lead QFN (RSM)

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Texas Instruments  BQ40Z50RSMR-R2

The bq40z50-R2 device, incorporatingpatented Impedance Track™ technology, is a fully integrated,single-chip, pack-based solution that provides a rich array of features for gas gauging,protection, and authentication for 1-series, 2-series, 3-series, and 4-series cell Li-Ion andLi-Polymer battery packs.

Using its integrated high-performance analog peripherals, the bq40z50-R2 device measures and maintains an accurate record of availablecapacity, voltage, current, temperature, and other critical parameters in Li-Ion or Li-Polymerbatteries, and reports this information to the system host controller over an SMBus v1.1 compatibleinterface.

The bq40z50-R2 device supports TURBO Mode 2.0 by providingthe available max power and max current to the host system. The device also supports Battery TripPoint to send a BTP interrupt signal to the host system at the preset state of charge thresholds.

The bq40z50-R2 provides software-based 1st- and 2nd-levelsafety protection against overvoltage, undervoltage, overcurrent, short-circuit current, overload,and overtemperature conditions, as well as other pack- and cell-related faults.

SHA-1 authentication, with secure memory for authentication keys, enables identificationof genuine battery packs.

The compact 32-lead QFN package minimizes solution cost and size for smart batterieswhile providing maximum functionality and safety for battery gauging applications.