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L9961TR

Chip for industrial battery management applications up to 5 cells

Operating Temp Min Celsius85.0
Operating Temp Max Celsius-40.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeIndustrial
Package NameVFQFPN 5X5X1 32L P0.5

L9961 is part of a complete battery pack monitoring, balancing, and protecting system for Li-Ion and Li-Polymer cells in 3, 4 or 5 series configurations. The L9961 uses a high precision ADC to provide cell voltage, stack voltage and temperature conversion via external NTC. Voltage monitoring...
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Key features
  • 2 μA shipment - DEEP SLEEP mode current and 5 μA standby consumption (with VREG LDO active) standby consumption (with VREG LDO active)
  • Integrated 3.3 V VREG LDO for supplying MCU and LEDs
  • Measures cell voltage (3 to 5 cells), with over/undervoltage detection and balance undervoltage protection
  • 12-bit voltage measurement with maximum error of ±15 mV in the [1.5 – 4.5] V range, for -40 °C < TJ < 105 °C
  • Measures stack voltage, with over/under voltage detection and plausibility check vs. sum of cells
  • Measures pack temperature via NTC, with over/undertemperature detection
  • Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40 °C < TJ < 105 °C
  • Measures battery current, with Coulomb counting, overcurrent (both directions) and short-circuit in discharge protection.
  • 16-bit signed current measurement with 0.1% full scale error at room temperature
  • I2C peripheral for device programming and data transfers over I2C bus
  • Cell balancing supporting up to 70 mA per cell
  • Dual configurable HS/LS predriver for pack relay management
  • Pack fuse management
  • Embedded NVM for configuration parameters storage
  • High hotplug robustness
In stock
Quantity $ per unit Savings
1-9$2.830%
10$2.5510%
Contact sales
$2.83
$2.83
Operating Temp Min Celsius85.0
Operating Temp Max Celsius-40.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeIndustrial
Package NameVFQFPN 5X5X1 32L P0.5

L9961 is part of a complete battery pack monitoring, balancing, and protecting system for Li-Ion and Li-Polymer cells in 3, 4 or 5 series configurations. The L9961 uses a high precision ADC to provide cell voltage, stack voltage and temperature conversion via external NTC. Voltage monitoring...
Read More

Key features
  • 2 μA shipment - DEEP SLEEP mode current and 5 μA standby consumption (with VREG LDO active) standby consumption (with VREG LDO active)
  • Integrated 3.3 V VREG LDO for supplying MCU and LEDs
  • Measures cell voltage (3 to 5 cells), with over/undervoltage detection and balance undervoltage protection
  • 12-bit voltage measurement with maximum error of ±15 mV in the [1.5 – 4.5] V range, for -40 °C < TJ < 105 °C
  • Measures stack voltage, with over/under voltage detection and plausibility check vs. sum of cells
  • Measures pack temperature via NTC, with over/undertemperature detection
  • Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40 °C < TJ < 105 °C
  • Measures battery current, with Coulomb counting, overcurrent (both directions) and short-circuit in discharge protection.
  • 16-bit signed current measurement with 0.1% full scale error at room temperature
  • I2C peripheral for device programming and data transfers over I2C bus
  • Cell balancing supporting up to 70 mA per cell
  • Dual configurable HS/LS predriver for pack relay management
  • Pack fuse management
  • Embedded NVM for configuration parameters storage
  • High hotplug robustness