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Product details

Parameters

Number of series cells (Min) 3 Vin (Max) (V) 80 Features High-side driver, I2C support, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Short-current detection, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Number of series cells (Max) 14 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Battery monitors & balancers

Package | Pins | Size

TQFP (PFB) 48 81 mm² 9 x 9 open-in-new Find other Battery monitors & balancers

Features

  • Battery monitoring capability for 3-series to 14-series cells
  • Integrated charge pump for high-side NFET protection with optional autonomous recovery
  • Extensive protection suite including voltage, temperature, current, and internal diagnostics
  • Two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1 µV (typical)
    • High accuracy cell voltage measurement < 10 mV (typical)
  • Wide-range current applications (±200-mV measurement range across sense resistor)
  • Integrated secondary chemical fuse drive protection
  • Autonomous or host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN mode: 1 µA
  • High-voltage tolerance of 85 V on cell connect and select additional pins
  • Tolerant of random cell attach sequence on production line
  • Support for temperature sensing using internal sensor and up to nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
  • Dual-programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)

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Description

The Texas Instruments BQ769142 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 14-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ769142 device is available in a 48-pin TQFP package.

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Technical documentation

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Type Title Date
* Data sheet BQ769142 3-Series to 14-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. A) Feb. 15, 2021
User guide BQ769142 Technical Reference Manual (Rev. A) May 07, 2021
Application note Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 May 06, 2021
Technical article How to stack battery monitors for high-cell-count industrial applications Feb. 11, 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
249
Description

The BQ76952EVM evaluation module (EVM) is a complete evaluation system for the BQ76952, a 3-cell to 16-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76952 circuit module which is used for simple evaluation of the BQ76952 monitor function. The circuit module includes one (...)

Features
  • Complete evaluation system for the BQ76952 3-cell to 16-cell Li-Ion and Phosphate battery monitor
  • Populated circuit module for 16-cell configuration for quick setup
  • Communication available with included USB interface adapter or available on 4-pin connector
  • Resistor cell simulator for operation with (...)

Design tools & simulation

CALCULATION TOOL Download
BQ76952/42 thermistor temperature optimizer - calculate the thermistors coefficients for T range
BQ769X2-THERMISTOR_COEFF_CALCULATOR — The BQ769x2 Thermistor Temperature Optimizer will calculate the thermistor coefficients for the specific thermistor used in your application, as described in the sections “Calibration:18K Temperature Model”,  “Calibration:180K Temperature Model” and “Calibration:Custom Temperature Model” of the TRM.
document-generic User guide

CAD/CAE symbols

Package Pins Download
TQFP (PFB) 48 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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