AMS – AS8506: Battery Cell Monitor and Balancer IC Eliminates Need for Complex Software

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AS8506: Battery Cell Monitor and Balancer IC Eliminates Need for Complex Software

The AS8506 is a battery management IC dedicated to support cell voltage measurement, monitoring, cell balancing and temperature measurement functions in Li-Ion battery stacks for electric/hybrid electric vehicles or in other industrial/consumer/PV battery applications. It performs distributed cell monitoring and balancing operations for stacked cell modules, including Safe Operating Area (SOA) checks and passive or active cell balancing. An advanced analog circuit in the AS8506 compares up to seven cell voltages against an internal or external reference with an accuracy of 1mV, to support cell balancing and cell monitoring functions. Cell voltage measurements can also be digitized with an accuracy of 5mV and reported to a host controller.

FEATURES
• Simultaneous cell voltage capture for balancing and SOA monitoring
• Autonomous balancing and SOA monitoring
• Active charge balancing option with very few external components
• Absolute cell voltage readout
• Readout of 2 temperature sensors
• 6V to 32V stack voltage range
• Support up to 7 cells single chip or unlimited in synchronized chain mode
• Autonomous passive balancing in the 100mA range
• 40-pin MLF (6 x 6) package
• 1k MSRP: $9.10 US

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