BQ76922

ACTIVO

Monitor de batería de celdas de iones de litio y fosfato de litio de serie 3 a 5

Detalles del producto

Rating Catalog Number of series cells (max) 5 Number of series cells (min) 3 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 27.5 Communication interface HDQ, I2C Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
Rating Catalog Number of series cells (max) 5 Number of series cells (min) 3 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 27.5 Communication interface HDQ, I2C Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
WQFN (RSN) 32 16 mm² 4 x 4
  • Battery monitoring capability for 3-series to 5-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 < 1µV (typical)
    • High accuracy cell voltage measurement < 10mV (typical)
  • Wide-range current applications (±200mV 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: 286µA
    • Multiple SLEEP mode options: 24µA to 41µA
    • Multiple DEEPSLEEP mode options: 9µA to 10µA
    • SHUTDOWN mode: 1µA
  • High-voltage tolerance of 60V 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 five external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400kHz I2C, and HDQ one-wire interface
  • Programmable LDO for external system usage
  • 32-pin QFN package (RSN)
  • Battery monitoring capability for 3-series to 5-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 < 1µV (typical)
    • High accuracy cell voltage measurement < 10mV (typical)
  • Wide-range current applications (±200mV 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: 286µA
    • Multiple SLEEP mode options: 24µA to 41µA
    • Multiple DEEPSLEEP mode options: 9µA to 10µA
    • SHUTDOWN mode: 1µA
  • High-voltage tolerance of 60V 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 five external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400kHz I2C, and HDQ one-wire interface
  • Programmable LDO for external system usage
  • 32-pin QFN package (RSN)

The Texas Instruments BQ76922 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 5-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, a programmable LDO for external system use, and a host communication peripheral supporting 400kHz I2C and HDQ one-wire standards. The BQ76922 device is available in a 32-pin 4 × 4 mm QFN package.

The Texas Instruments BQ76922 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 5-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, a programmable LDO for external system use, and a host communication peripheral supporting 400kHz I2C and HDQ one-wire standards. The BQ76922 device is available in a 32-pin 4 × 4 mm QFN package.

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* Data sheet BQ76922 3-Series to 5-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. A) PDF | HTML 03 abr 2024
User guide BQ76922 Technical Reference Manual PDF | HTML 16 abr 2024
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 15 feb 2022
Certificate BQ76922EVM EU Declaration of Conformity (DoC) 26 ago 2021
Application note BQ769x2 Software Development Guide (Rev. B) PDF | HTML 26 ago 2021
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML 06 ago 2021
Application note Parallel Paths with the BQ769x2 Battery Monitor 09 ene 2020

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

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Guía del usuario: PDF | HTML
Software de aplicación y estructura

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  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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