1 Product Summary

The 33771B is a SMARTMOS lithium-ion battery cell controller IC designed for automotive applications, such as hybrid electric

(HEV) and electric vehicles (EV) along with industrial applications, such as energy storage systems (ESS) and uninterruptible

power supply

(UPS) systems.

The device performs ADC conversions of the differential cell voltages and current, as well as battery coulomb counting and

battery temperature measurements. The information is digitally transmitted through the SPI or transformer isolation to a

microcontroller for processing.