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BQ76972

AKTIV

Hochpräziser Batterieüberwachungs- und Schutzbaustein für Lithium-Ionen-, Li-Poly- und LiFePO4-Akkup

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BQ76972

AKTIV
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Produktdetails

Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features Autonomous Mode, Coulomb Counter, Digital output, High-side FET drive, I2C support, LDO output, Low-Power Sleep Mode, Multi-cell support, One-Time Programmable (OTP) memory, Open wire (OW), Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Power-save mode, Scratchpad memory, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566
Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features Autonomous Mode, Coulomb Counter, Digital output, High-side FET drive, I2C support, LDO output, Low-Power Sleep Mode, Multi-cell support, One-Time Programmable (OTP) memory, Open wire (OW), Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Power-save mode, Scratchpad memory, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566
TQFP (PFB) 48 81 mm² (9 mm × 9 mm)
  • Battery monitoring capability for 3-series to 16-series cells
  • High accuracy cell voltage measurement of ±3.0 mV
  • 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)
  • 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 I 2C, SPI, and HDQ one-wire interface
  • Dual-programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)
  • Battery monitoring capability for 3-series to 16-series cells
  • High accuracy cell voltage measurement of ±3.0 mV
  • 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)
  • 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 I 2C, SPI, and HDQ one-wire interface
  • Dual-programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)

The Texas Instruments BQ76972 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO 4 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 I 2C, SPI, and HDQ one-wire standards. The BQ76972 device is available in a 48-pin TQFP package.

The Texas Instruments BQ76972 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO 4 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 I 2C, SPI, and HDQ one-wire standards. The BQ76972 device is available in a 48-pin TQFP package.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt BQ76972 3-Series to 16-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4Battery Packs datasheet PDF | HTML 23.11.2023
* Benutzerhandbuch BQ76972 Technical Reference Manual PDF | HTML 26.06.2023
Anwendungshinweis Why is short-circuit protection more challenging for high- side driver battery packs than low-side driver? PDF | HTML 23.01.2026
Anwendungshinweis Enhance Temperature Measurement Performance With BQ769x2 and TMP6x for Battery Management System PDF | HTML 14.11.2025
Anwendungshinweis Design Considerations of Current Sensing With BQ769x2 Family for Battery Management System (Rev. A) PDF | HTML 01.08.2025
Anwendungshinweis BQ769x2 Frequently Asked Questions PDF | HTML 29.03.2024
Technischer Artikel 3 major design challenges to solve in battery energy storage systems PDF | HTML 30.01.2024
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML 20.10.2023
Anwendungshinweis Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 09.02.2023
Technischer Artikel Pack a punch in battery pack systems with low-cost MCUs PDF | HTML 16.11.2021
Anwendungshinweis Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 06.05.2021
Anwendungshinweis BQ76952 High Voltage Stress Report PDF | HTML 25.02.2021
Technischer Artikel How to stack battery monitors for high-cell-count industrial applications PDF | HTML 11.02.2021
Anwendungshinweis BQ76942 IEC ESD 61000-4-2 ESD Test Report 16.11.2020
Technischer Artikel CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 28.05.2020
Technischer Artikel Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 01.04.2020
Technischer Artikel Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 20.02.2020
Anwendungshinweis Parallel Paths with the BQ769x2 Battery Monitor 09.01.2020
Technischer Artikel Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 06.01.2020

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