AS8506-BQFP

The AS8506 performs cell balancing through passive and active balancing methods. Passive balancing dissipates energy from cells with higher voltages to the reference value using a resistor, with a maximum current capability of 100mA and an internal resistance of 5Ω .

The AS8506 battery management IC supports a maximum stack voltage for battery stacks. It is recommended to connect the AS8506 devices stacked first and connect the battery stack from bottom to top in sequence to avoid any possible damage to the system. When removing the battery pack, it is strictly recommended to remove the battery pack from the top as removing it from the bottom will damage the system. The AS8506 is designed for cell voltage measurement, monitoring, cell balancing, and temperature measurement functions in Li-Ion battery stacks for electric/hybrid electric vehicles or other industrial/consumer/PV battery applications. The AS8506 supports cell voltage diagnosis with externally adjustable upper and lower cell voltage limits, fast cell voltage capture through a 12-bit SAR ADC, passive cell balancing, and temperature measurement on two external NTC sensors through a 12-bit ADC. The ambient temperature range for the AS8506 is from -40°C to +85°C. The AS8506 can be configured with one device as 'Master' and the rest as 'Slave' devices, connected through a daisy-chain of 3-wire customized SPI protocol. The microcontroller assigns addresses to all AS8506 devices, including the Master, to initiate cell balancing and check status. The AS8506 supports stackable configurations for battery stacks, ensuring proper connection and removal procedures to prevent system damage.

The ambient temperature range for both versions of the AS8506 battery management IC is from -40°C to +85°C.