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    L9988-TR

    12V Li-Ion Battery Management System Solution

    Parameters
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTape And Reel
    RoHs compliantEcopack2
    GradeAutomotive Safety
    Package NameTQFP 80 14x14x1.0 ExPad Down
    Description

    The L9988 is a multicell battery stack monitor that measures up to 4 series-connected battery cells with a total measurement error of less than 2 mV. The IC has one battery stack current measurement channel, which can support synchronous current and voltage measurement, performing coulomb counting...
    Read More

    Key features
    Key features
    • AEC-Q100 grade 1 qualified
    • [4V÷28V] Powersupplyoperating range
    • Voltagemeasurement:
      • 15-bit Sigma Delta ADC with programmable filter time with
        cut-off down to 30
        Hz
      • Measures 4 single
        cell
        voltage,
        with
        over/under
        voltage detection and
        balance
        timeout protection
      • Measures
        stack
        voltage,
        with
        over/under
        voltage detection and plausibility check vs.
        sum
        of cells
      • Full 0÷5
        V measurement range, with total error < ±2
        mV in the [1.8
        V÷4.5
        V] range with -40°C ≤ TJ ≤
        +105°C
    • Currentmeasurement:
      • 20-bit Current Sense ADC for battery current measurement
        (range ± 1500A), with
        overcurrent
        protection Total error < 0.23% for ±200A, considering 100
        µΩ RSHUNT typical value (no spread
        contribution)
      • 20-bit Coulomb Counting ADC for SoC estimation Total error < 3.9% for ±100
        mA in STANDBY MODE, considering 100
        µΩ RSHUNT typical value (no spread
        contribution) Total error < 0.7% for ±50A in NORMAL MODE, considering 100
        µΩ RSHUNT typical value (no spread
        contribution)
      • Continuously
        short-circuit
        detection
    • Passivecellbalancing:Max 200mA, supporting time-continuous and PWM modes, with synchronized odd-even channelsbalance
    • 4 analog inputs measurepacktemperaturevia NTCs, with OT/UT detection; 2 GPIOs are available
    • Ultra-low power consumption of 190µA in STANDBY MODE and 50µA in SLEEP MODE
    • Integrated PMIC with configurable regulators:
      • Boost pre-regulator to support system full operation at low battery level
      • VCORE regulator for MCU supply [1.125
        V÷5
        V]
      • VCC regulator for MCU ADCs supply [3.3
        V/5
        V]
      • Fixed 5
        V regulator for external CAN power supply
      • VSTBY regulator for external RTC supply [3.3
        V/5
        V]
      • Fixed 5
        V VTREF regulator to bias external NTCs
    • Integrated dualhigh-sideVGS pre-driver:
      • Drive 2 independent groups back-to-back MOSFETs
      • Switch OFF MOSFETs in case of SC during NORMAL and STANDBY
        MODE.
    • Standard 4-wire, 4MHz, 40-bit SPI interface for device configuration and diagnostics dataread-out
    • Watchdogs: Configurable double watchdog (Q&A WD andtime windowed WD)
    • Real-timeclock:Selectabletimer from 1s to 180 days
    • Configurable wakeup monitoring OV/UV/OT/OVC/SC
    • Hardware wakeup module: IGNleveltriggeredand WAKEedgetriggered
    • Embedded NVM for configuration parameters storage and runtime configuration integrity check
    • Full ISO26262 compliant, up to ASIL-D systems ready
    • Hot plug robustness
    Coming Soon
    Parameters
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTape And Reel
    RoHs compliantEcopack2
    GradeAutomotive Safety
    Package NameTQFP 80 14x14x1.0 ExPad Down
    Description

    The L9988 is a multicell battery stack monitor that measures up to 4 series-connected battery cells with a total measurement error of less than 2 mV. The IC has one battery stack current measurement channel, which can support synchronous current and voltage measurement, performing coulomb counting...
    Read More

    Key features
    Key features
    • AEC-Q100 grade 1 qualified
    • [4V÷28V] Powersupplyoperating range
    • Voltagemeasurement:
      • 15-bit Sigma Delta ADC with programmable filter time with
        cut-off down to 30
        Hz
      • Measures 4 single
        cell
        voltage,
        with
        over/under
        voltage detection and
        balance
        timeout protection
      • Measures
        stack
        voltage,
        with
        over/under
        voltage detection and plausibility check vs.
        sum
        of cells
      • Full 0÷5
        V measurement range, with total error < ±2
        mV in the [1.8
        V÷4.5
        V] range with -40°C ≤ TJ ≤
        +105°C
    • Currentmeasurement:
      • 20-bit Current Sense ADC for battery current measurement
        (range ± 1500A), with
        overcurrent
        protection Total error < 0.23% for ±200A, considering 100
        µΩ RSHUNT typical value (no spread
        contribution)
      • 20-bit Coulomb Counting ADC for SoC estimation Total error < 3.9% for ±100
        mA in STANDBY MODE, considering 100
        µΩ RSHUNT typical value (no spread
        contribution) Total error < 0.7% for ±50A in NORMAL MODE, considering 100
        µΩ RSHUNT typical value (no spread
        contribution)
      • Continuously
        short-circuit
        detection
    • Passivecellbalancing:Max 200mA, supporting time-continuous and PWM modes, with synchronized odd-even channelsbalance
    • 4 analog inputs measurepacktemperaturevia NTCs, with OT/UT detection; 2 GPIOs are available
    • Ultra-low power consumption of 190µA in STANDBY MODE and 50µA in SLEEP MODE
    • Integrated PMIC with configurable regulators:
      • Boost pre-regulator to support system full operation at low battery level
      • VCORE regulator for MCU supply [1.125
        V÷5
        V]
      • VCC regulator for MCU ADCs supply [3.3
        V/5
        V]
      • Fixed 5
        V regulator for external CAN power supply
      • VSTBY regulator for external RTC supply [3.3
        V/5
        V]
      • Fixed 5
        V VTREF regulator to bias external NTCs
    • Integrated dualhigh-sideVGS pre-driver:
      • Drive 2 independent groups back-to-back MOSFETs
      • Switch OFF MOSFETs in case of SC during NORMAL and STANDBY
        MODE.
    • Standard 4-wire, 4MHz, 40-bit SPI interface for device configuration and diagnostics dataread-out
    • Watchdogs: Configurable double watchdog (Q&A WD andtime windowed WD)
    • Real-timeclock:Selectabletimer from 1s to 180 days
    • Configurable wakeup monitoring OV/UV/OT/OVC/SC
    • Hardware wakeup module: IGNleveltriggeredand WAKEedgetriggered
    • Embedded NVM for configuration parameters storage and runtime configuration integrity check
    • Full ISO26262 compliant, up to ASIL-D systems ready
    • Hot plug robustness