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BQ76907

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Low-power monitor and protector for 2S to 7S with high accuracy cell voltage measurement

Product details

Number of series cells (min) 2 Vin (max) (V) 38.5 Features Digital output, I2C support, Integrated ADC, LDO output, Low-Power Sleep Mode, Low-side driver, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer, Protector Number of series cells (max) 7 Operating temperature range (°C) -40 to 110 Rating Catalog Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface I2C Operating current (typ) (µA) 140
Number of series cells (min) 2 Vin (max) (V) 38.5 Features Digital output, I2C support, Integrated ADC, LDO output, Low-Power Sleep Mode, Low-side driver, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer, Protector Number of series cells (max) 7 Operating temperature range (°C) -40 to 110 Rating Catalog Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface I2C Operating current (typ) (µA) 140
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • Battery monitoring capability for 2-series to 7-series cells
  • Integrated low-side drivers for NFET protection with optional autonomous recovery
  • Extensive protection suite including voltage, temperature, current, and internal diagnostics
  • 16-bit delta-sigma voltage ADC
    • High accuracy cell voltage measurement of 4 mV (typical)
  • Dedicated 16- or 24-bit delta-sigma coulomb counter ADC
    • High-accuracy current measurement with low input offset error
    • Wide-range current applications (±200-mV measurement range across sense resistor)
    • 48-bit accumulated charge integrator with timer
  • Host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 32 µA to 175 µA
    • SLEEP mode: 6 µA
    • DEEPSLEEP mode: 2.7 µA
    • SHUTDOWN mode: <1 µA
  • High-voltage tolerance of 45 V on cell connect and select additional pins
  • Support for temperature sensing using an internal sensor and an external thermistor
  • Integrated one-time-programmable (OTP) memory for device settings, programmed by TI
  • 400-kHz I2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN (RGR) package
  • Battery monitoring capability for 2-series to 7-series cells
  • Integrated low-side drivers for NFET protection with optional autonomous recovery
  • Extensive protection suite including voltage, temperature, current, and internal diagnostics
  • 16-bit delta-sigma voltage ADC
    • High accuracy cell voltage measurement of 4 mV (typical)
  • Dedicated 16- or 24-bit delta-sigma coulomb counter ADC
    • High-accuracy current measurement with low input offset error
    • Wide-range current applications (±200-mV measurement range across sense resistor)
    • 48-bit accumulated charge integrator with timer
  • Host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 32 µA to 175 µA
    • SLEEP mode: 6 µA
    • DEEPSLEEP mode: 2.7 µA
    • SHUTDOWN mode: <1 µA
  • High-voltage tolerance of 45 V on cell connect and select additional pins
  • Support for temperature sensing using an internal sensor and an external thermistor
  • Integrated one-time-programmable (OTP) memory for device settings, programmed by TI
  • 400-kHz I2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN (RGR) package
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Technical documentation

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* Data sheet BQ76907 2-Series to 7-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, LiFePO4 (LFP), and LTO Battery Packs datasheet PDF | HTML 16 Nov 2023
Application note Cell Balancing With BQ7690x Battery Monitors PDF | HTML 04 Jan 2024
User guide BQ7690x Software Development Guide PDF | HTML 11 Dec 2023
User guide BQ76907 Technical Reference Manual PDF | HTML 17 Nov 2023
Certificate BQ76907EVM EU Declaration of Conformity (DoC) 15 Nov 2023

Design & development

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

Evaluation board

BQ76907EVM — BQ76907 evaluation module for low-power monitor and protector

The BQ76907EVM evaluation module (EVM) is a complete evaluation system for the BQ76907. The BQ76907 is a highly integrated, high-accuracy battery monitor and protector for 2-series to 7-series Li-Ion, LiPolymer and LiFePO4 battery packs. The EVM includes one BQ76907 integrated circuit (IC), sense (...)
User guide: PDF | HTML
Not available on TI.com
Reference designs

TIDA-010268 — 5s to 7s battery pack monitor reference design with low-side MOSFET control

This reference design is a high-cell voltage-accuracy 5s to 7s lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery pack design. The design monitors each cell voltage, pack current, cell and metal-oxide semiconductor field-effect transistor (MOSFET) temperature with high accuracy and (...)
Design guide: PDF
Package Pins Download
VQFN (RGR) 20 View options

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