In stock MC33771BTA1AE Battery cell controller IC

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.

9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient
7 to 14 cells management
Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI
Addressable on initialization
0.8 mV maximum total voltage measurement error
Synchronized cell voltage/current measurement with coulomb count
Total stack voltage measurement
Seven GPIO/temperature sensor inputs
5.0 V at 5.0 mA reference supply output
Automatic over/undervoltage and temperature detection routable to fault pin
Integrated sleep mode over/undervoltage and temperature monitoring
Onboard 300 mA passive cell balancing with diagnostics
Hot plug capable
Detection of internal and external faults, as open lines, shorts, and leakages
Designed to support ISO 26262, up to ASIL D safety capability
Fully compatible with the MC33772 for a maximum of six cells
Qualified in compliance with AECQ-100

Automotive
48 V Battery Management Systems
High-Voltage Battery Management Systems (> 800V)
Industrial
E-bikes, E-scooters
Energy Storage Systems (ESS)
Uninterrupted Power Supply (UPS)