Stackable 16 cell Li-ion monitor chip

Lapis semiconductor has announced a lithium-ion battery monitoring chip that supports 16 cells in series.

ML5239 can be stacked for higher voltages, and is consumes only 100nA in shut-down.

Applications are expected in power storage and uninterruptible power supplies.

Each chip has its own ADC, and it looks like it is set up to control passive cell balancing.

Sadly, little further information is available without registering on the company website.

Parameter	Specifications
No. of cells supported	16 cells in series (Scalable via multi-stage series connection)
Power down consumption	0.1µA(typ.)
Integrated ADC	12bit SAR
Cell voltage measurement accuracy	±10mV (typ.)
Cell balancing function	Built-in external n-mosfet drive circuit
Temperature sensor measurement function	Thermistor connection pin (4ch)
Self-diagnostic function	Cell voltage measurement open/short detection pin, etc.
MCU interface	SPI aerial (CRC communication error detection function)
Operating supply voltage	+10 to +72V
Operating temperature	-40 to 85°C
Package	TQFP64 (12 x 12mm)

steve bush

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via Yuichun