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L9965A-TR

18 Cell Battery Management IC

ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive Safety
Package NameTQFP 64 10x10x1.0 mm

The L9965A/L99BM218 is an 18-channel battery cell monitoring and balancing IC.


The device belongs to the L9965/L99BM2 chipset family for high-voltage battery management system monitoring and control (automotive/industrial respectively).

Key features
  • Temperature grade 1: –40°C to +125°C operating temperature range
  • HBM ESD classification level 2
  • CDM ESD classification level C4B
  • Fully synchronizedhigh-accuracymeasurements on cell voltage, busbar and stack voltage with dedicated ADC:
    • Total error including
      aging
      and post soldering <1.4 mV at 3.3
      V, -40°C to 105°C
    • 16-bit resolution
    • Cell range: -1
      V to 5.5
      V
    • Integrated digital filtering with programmable cut-off
      frequency from 3.3 kHz to 4.4 Hz
    • Fully redundant architecture
    • Cell and busbar support on every channel
    • Dedicated busbar channel with
      a ±1
      V range
  • Passive internal cell balancing up to 400mA, supporting time-continuous and PWM modes, with automatic cool down based onexternal NTC sensing. Overcurrent protection during balancing is also available inlow-powermode.
  • IntegratedDC-DCconverter for energy efficiency:
    • Deep sleep: <12
      µA
    • Cyclic
      Wake-up
      Mode: <20
      µA
    • Normal Mode: <3
      mA
  • 10 configurable GPIO
  • SPIcontrollerand I2Ccontrollerperipherals for interfacing external EEPROMs and sensors
  • SPItargetfor direct MCU interface
  • Stackable architecture forhigh-voltagebattery packs up to 59 devices
  • Embedded NVM for configurationparameter storageand runtime configuration integrity check
  • Ultra-fast vertical interface peripheral for isolated communication
  • Compatible with L9965C pack monitoring chip with a maxdesynchronizationtime of 7µsat system level
Out of Stock
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive Safety
Package NameTQFP 64 10x10x1.0 mm

The L9965A/L99BM218 is an 18-channel battery cell monitoring and balancing IC.


The device belongs to the L9965/L99BM2 chipset family for high-voltage battery management system monitoring and control (automotive/industrial respectively).

Key features
  • Temperature grade 1: –40°C to +125°C operating temperature range
  • HBM ESD classification level 2
  • CDM ESD classification level C4B
  • Fully synchronizedhigh-accuracymeasurements on cell voltage, busbar and stack voltage with dedicated ADC:
    • Total error including
      aging
      and post soldering <1.4 mV at 3.3
      V, -40°C to 105°C
    • 16-bit resolution
    • Cell range: -1
      V to 5.5
      V
    • Integrated digital filtering with programmable cut-off
      frequency from 3.3 kHz to 4.4 Hz
    • Fully redundant architecture
    • Cell and busbar support on every channel
    • Dedicated busbar channel with
      a ±1
      V range
  • Passive internal cell balancing up to 400mA, supporting time-continuous and PWM modes, with automatic cool down based onexternal NTC sensing. Overcurrent protection during balancing is also available inlow-powermode.
  • IntegratedDC-DCconverter for energy efficiency:
    • Deep sleep: <12
      µA
    • Cyclic
      Wake-up
      Mode: <20
      µA
    • Normal Mode: <3
      mA
  • 10 configurable GPIO
  • SPIcontrollerand I2Ccontrollerperipherals for interfacing external EEPROMs and sensors
  • SPItargetfor direct MCU interface
  • Stackable architecture forhigh-voltagebattery packs up to 59 devices
  • Embedded NVM for configurationparameter storageand runtime configuration integrity check
  • Ultra-fast vertical interface peripheral for isolated communication
  • Compatible with L9965C pack monitoring chip with a maxdesynchronizationtime of 7µsat system level