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bq76940 - 3-series to 15-series cell battery monitor

This page provides the datasheet information for the bq76940, a member of the bq76920 3-series to 15-series cell battery monitor family.

Datasheet Summary

Description

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies.

Features

  • AFE monitoring features.
  • Pure digital interface.
  • Internal ADC measures cell voltage, die temperature, and external thermistor.
  • A separate, internal ADC measures pack current (coulomb counter).
  • 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 fau.

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Datasheet preview – bq76940

Datasheet Details

Part number bq76940
Manufacturer Texas Instruments
File Size 2.70 MB
Description 3-series to 15-series cell battery monitor
Datasheet download datasheet bq76940 Datasheet
Additional preview pages of the bq76940 datasheet.

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Full PDF Text Transcription

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BQ76920, BQ76930, BQ76940 SLUSBK2I – OCTOBER 2013 – REVISED MARCH 2022 BQ769x0 3-Series to 15-Series Cell Battery Monitor Family for Li-Ion and Phosphate Applications 1 Features • AFE monitoring features – Pure digital interface – Internal ADC measures cell voltage, die temperature, and external thermistor – A separate, internal ADC measures pack current (coulomb counter) – 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 fault detection • Additional features – Integrated cell balancing FETs – Charge, discharge low-side NCH FET drivers – Alert interrupt to host microcontroller – 2.5-V or 3.
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