AS8506C-BQFM

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 selected based on cell chemistry and voltage limits. The internal shuttle switch has a maximum current capability of 100mA and an internal resistance of 5 Ω .

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

The AS8506 battery management IC supports a maximum stack voltage for battery stacks. The AS8506 is designed to support 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 operates by configuring one device as the 'Master' and the rest as 'Slave' devices, connected through a daisy-chain of 3-wire customized SPI protocol. The microcontroller communicates with the Slave devices through the Master device. The AS8506 features 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 AS8506 is available in two versions: AEC-Q100 automotive qualified AS8506 and AS8506C for industrial and other applications, both with an ambient temperature range from -40°C to +85°C. The AS8506 is capable of supporting battery stacks with the mentioned features and specifications.