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9 to 15-series cell li-ion and li-phosphate battery monitor (bq76940 family)



Qty Price (USD)
1-99 4.951
100-249 4.037
250-999 3.173
1,000+ 2.691

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
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Export classification

  • US ECCN: EAR99

Packaging information

Package | Pins TSSOP (DBT) | 44
Package qty | Carrier: 40 | TUBE
Operating temperature range (°C) -40 to 85
View TI packaging information

Features for the BQ76940

  • AFE monitoring features
    • Pure digitalinterface
    • Internal ADC measures cell voltage, die temperature, and externalthermistor
    • A separate, internal ADC measures pack current (coulombcounter)
    • Directly supports up to three thermistors(103AT)

  • Hardware protection features
    • Overcurrent in Discharge(OCD)
    • Short Circuit in Discharge (SCD)
    • Overvoltage(OV)
    • Undervoltage (UV)
    • Secondary protector faultdetection
  • Additional features
    • Integrated cell balancing FETs
    • Charge, discharge low-side NCH FETdrivers
    • Alert interrupt to host microcontroller
    • 2.5-V or3.3-V output voltage regulator
    • No EEPROM programmingnecessary
    • High supply voltage absolute maximum (up to 108V)
    • Simple I2C compatible interface (CRCoption)
    • Random cell connection tolerant

Description for the BQ76940

The bq769x0 familyof robust analog front-end (AFE) devices serves as part of a complete pack monitoring andprotection solution for next-generation, high-power systems, such as light electric vehicles, powertools, and uninterruptible power supplies. The bq769x0 is designed with low power in mind: Sub-blocks within the IC maybe enabled or disabled to control the overall chip current consumption, and a SHIP mode provides asimple way to put the pack into an ultra-low power state.

The bq76920 device supports up to 5-seriescells or typical 18-V packs, the bq76930 handles up to 10-series cells or typical 36-V packs, andthe bq76940 works for up to 15-series cells or typical 48-V packs. Avariety of battery chemistries may be managed with these AFEs, including Lithium Ion, Lithium ironphosphate, and more. Through I2C, a host controller can use thebq769x0 to implement manybattery pack management functions, such as monitoring (cell voltages, pack current, packtemperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/Dconverters enable a purely digital readout of critical system parameters, with calibration handledin TI’s manufacturing process.



Qty Price (USD)
1-99 4.951
100-249 4.037
250-999 3.173
1,000+ 2.691

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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