This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack design. It monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion, LiFePO4 battery pack against cell overvoltage, cell undervoltage, overtemperature, charge and discharge over current and discharge short-circuit situations. It adopts high-side N-channel MOSFET architecture and has strong driving on and off capability. Through an efficient auxiliary power supply strategy, this reference design achieves 100-μA stand-by and 10-μA ship mode consumption, saving more energy and allowing longer shipping time and idle time. These features make this reference design highly applicable for e-bike and e-scooter battery pack applications.

• Ultra-low current consumption:

  • Typical 100-μA when in standby mode

  • Typical 10-μA when in shipping mode

• High cell voltage accuracy without calibrations:

  • ±5 mV at 25°C; ±10 mV at 0°C–60°C; ±15 mV at –40°C to 85°C

• Robust battery cell protection, including:

  • Primary: cell overvoltage, cell undervoltage, two levels overcurrent discharge, overcurrent charge, discharge short circuit and overtemperature

  • Secondary: cell over voltage, cell undervoltage and overtemperature

• Other system protections, including: cell open wire and host watchdog

• Support random cell connections

• Reverse charger and high voltage on PACK side

• High-side N-channel MOSFETs and strong driving capability