TI BQ76PL536ATPAPTQ1

The bq76PL536A-Q1 is a stackable battery monitor and protector for 3-to-6 series-connected lithium-ion cells. The bq76PL536A-Q1 integrates an AFE and a precision ADC for accurate cell voltage measurement. A separate ADC is used for temperature measurement. In addition to temperature measurement, the device provides overvoltage and undervoltage monitoring protection for each channel. User-programmable protection thresholds and delay times are stored in non-volatile memory. A fault signal is output when any threshold is exceeded. Stacked bq76PL536A-Q1 devices can support battery packs of up to 192 cells. All devices are connected via a high-speed SPI interface. Simplified System Connections

• Qualified for automotive applications with the following AEC-Q100 results:
  • Device temperature grade 2: –40℃ to +105℃ ambient operating temperature range
  • Device HBM classification level 2
  • Device CDM classification level C4B
• 3-cell to 6-cell support, all chemistries
• Hot plug
• High-speed SPI for data communication
• Interface between vertically stacked devices requires no isolation components
• High-accuracy ADC:
  • ±1mV typical accuracy
  • 14-bit resolution, 6μs conversion time
  • Nine ADC inputs
  • Dedicated pin for synchronized measurements
• Configuration data stored in OTP registers with ECC
• Integrated comparator (secondary protector) supports:
  • Overvoltage and undervoltage protection
  • Overtemperature protection
  • Programmable thresholds and delay times
  • Dedicated fault signal
• Cell balancing control output with safety timeout support; balancing current set via external components
• Supply voltage range: 7.2V to 27V continuous and 36V peak
• Low power consumption:
  • Shutdown current typical 12μA, idle current typical 45μA
• Integrated 5V, 3mA high-accuracy LDO

• Electric vehicles and hybrid electric vehicles
• Uninterruptible power supply (UPS) systems
• Electric bicycles and electric scooters
• Large battery systems