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BQ76907-Q1

AKTIV

Hochpräziser 7S-Batterieüberwachungs- und Schutzbaustein mit geringem Stromverbrauch für LiFePO4 und

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Datenblatt

BQ76907-Q1

AKTIV
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Produktdetails

Rating Automotive Number of series cells (max) 7 Number of series cells (min) 2 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 Vin (max) (V) 38.5 Communication interface I2C Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 0 Battery overvoltage protection (max) (V) 5.5 TI functional safety category Functional Safety-Compliant Operating current (typ) (µA) 140
Rating Automotive Number of series cells (max) 7 Number of series cells (min) 2 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 Vin (max) (V) 38.5 Communication interface I2C Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 0 Battery overvoltage protection (max) (V) 5.5 TI functional safety category Functional Safety-Compliant Operating current (typ) (µA) 140
VQFN (RGR) 20 12.25 mm² (3.5 mm × 3.5 mm)
  • AEC-Q100 Qualified for automotive applications
  • Battery and supercap 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 1mV (typical)
  • Dedicated 16- or 24-bit delta-sigma coulomb counter ADC
    • High-accuracy current measurement with low input offset error
    • Wide-range current applications (±200mV measurement range across sense resistor)
    • 48bit accumulated charge integrator with timer
  • Host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode (with Coulomb counting): 32µA to 175µA
    • SLEEP mode (with protections active): 6µA
    • DEEPSLEEP mode: 2.7µA
    • SHUTDOWN mode: <1µA
  • Supply voltage from 3V to 38.5V
  • High-voltage tolerance of 45V 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
  • 400kHz I2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN (RGR) package
  • AEC-Q100 Qualified for automotive applications
  • Battery and supercap 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 1mV (typical)
  • Dedicated 16- or 24-bit delta-sigma coulomb counter ADC
    • High-accuracy current measurement with low input offset error
    • Wide-range current applications (±200mV measurement range across sense resistor)
    • 48bit accumulated charge integrator with timer
  • Host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode (with Coulomb counting): 32µA to 175µA
    • SLEEP mode (with protections active): 6µA
    • DEEPSLEEP mode: 2.7µA
    • SHUTDOWN mode: <1µA
  • Supply voltage from 3V to 38.5V
  • High-voltage tolerance of 45V 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
  • 400kHz I2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN (RGR) package

The Texas Instruments BQ76907-Q1 provides a highly integrated, high-accuracy battery monitor and protector for 2-series to 7-series Li-ion, Li-polymer, LiFePO4 (LFP), and LTO battery packs and supercaps. The device includes a high-accuracy monitoring system with a dedicated coulomb counter and accumulated charge integration, a highly configurable protection subsystem, and support for host-controlled cell balancing. Integration includes low-side protection NFET drivers, a programmable LDO for external system use, and an I2C host communication interface supporting up to 400kHz operation with optional CRC. Continuous Coulomb counting is available in multiple power modes ranging down to 32µA. The BQ76907-Q1 operates over a supply voltage from 3V to 38.5V and is available in a 20-pin QFN package.

The Texas Instruments BQ76907-Q1 provides a highly integrated, high-accuracy battery monitor and protector for 2-series to 7-series Li-ion, Li-polymer, LiFePO4 (LFP), and LTO battery packs and supercaps. The device includes a high-accuracy monitoring system with a dedicated coulomb counter and accumulated charge integration, a highly configurable protection subsystem, and support for host-controlled cell balancing. Integration includes low-side protection NFET drivers, a programmable LDO for external system use, and an I2C host communication interface supporting up to 400kHz operation with optional CRC. Continuous Coulomb counting is available in multiple power modes ranging down to 32µA. The BQ76907-Q1 operates over a supply voltage from 3V to 38.5V and is available in a 20-pin QFN package.
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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt BQ76907-Q1 2-Series to 7-Series High Accuracy Automotive Battery Monitor and Protector for Li-Ion, Li-Polymer, LiFePO4 (LFP), and LTO Battery Packs and Supercaps datasheet PDF | HTML 07.03.2025
Anwendungshinweis Design Guide for Automotive Door Crash Power Module (CPM) PDF | HTML 15.07.2026
Application brief Meeting The Power Demands of 12V Auxiliary and Supercapacitor Batteries in Automotive Applications PDF | HTML 18.07.2025

Design und Entwicklung

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Evaluierungsplatine

BQ76907EVM — BQ76907-Evaluierungsmodul für energieeffiziente Überwachung und Schutzvorrichtung

Das BQ76907EVM-Evaluierungsmodul (EVM) ist ein komplettes Evaluierungssystem für den BQ76907. Der BQ76907 ist ein hochintegrierter, hochpräziser Batteriemonitor und -schutz für Li-Ion-, LiPolymer- und LiFePO4-Batterien der Serien 2 bis 7. Das EVM enthält einen integrierten Schaltkreis (IC) (...)
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BQ7690X-CODE-EXAMPLES — BQ7690x Batteriemonitore Codebeispiele

Microcontroller sample code examples for interfacing with BQ7690x battery monitors and protectors.
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