MC33771BSP1AER2

What is MC33771BSP1AER2?

The 33771 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 Serial Peripheral Interface (SPI) or Transformer Isolation (TPL) to a microcontroller for processing.

MC33771BSP1AER2 Applications：

Battery Cell Monitoring:The IC is likely capable of monitoring individual battery cell voltages for precise state-of-charge (SOC) and state-of-health (SOH) calculations.

Temperature Monitoring:The BMS is likely equipped with temperature monitoring capabilities to ensure that the battery operates within the optimal temperature range.

Overvoltage and Undervoltage Protection:The IC is likely designed to protect the battery cells from overvoltage and undervoltage conditions, enhancing the safety and lifespan of the battery.

Balancing and Equalization:Balancing functionality may be included to ensure that all cells in the battery pack have similar voltage levels, improving overall pack performance and longevity.

Communication Interfaces:The IC may support communication interfaces, such as Controller Area Network (CAN), to enable communication with other components in the vehicle’s network.

Fault Detection and Reporting:The BMS is likely equipped with fault detection mechanisms to identify and report any abnormalities or issues in the battery system.

Current Sensing:Current sensing features may be present for accurate measurement of the battery current, which is essential for calculating state-of-charge.

Integrated Safety Features:Safety features, such as built-in diagnostics and fail-safe mechanisms, contribute to the overall safety and reliability of the battery system.

Automotive-Grade Reliability:Being designed for automotive applications, the IC is likely built to meet stringent automotive-grade standards for reliability and durability.

Application in Electric and Hybrid Vehicles:The MC33771BSP1AER2 is specifically intended for use in electric vehicles (EVs) and hybrid electric vehicles (HEVs) as part of the battery management

system.