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Document Number: MC33772SM
Rev. 2.0, 8/2016
NXP Semiconductors
Data Sheet Summary for MC33772
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© 2016 NXP B.V.
Battery cell controller IC
The 33772 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 SPI or transformer isolation to a microcontroller for
processing.
Features
•5.0 V ≤ V
PWR
≤ 30 V operation, 40 V transient
• 3 to 6 cells management
• Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI
• Addressable on initialization
• 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 & temperature detection routable to fault pin
• Integrated Sleep mode over/undervoltage & 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
• Single chip ASIL C capable
• Fully compatible with the MC33771 for max 14 cells
Figure 1. Simplified application diagram of SPI communication context
BATTERY CELL CONTROLLER IC
33772
Applications
• Automotive: 12 V and high-voltage battery packs
• E-bikes, e-scooters
• Energy storage systems
• Uninterruptible power supply (UPS)
AE SUFFIX (PB-FREE)
98ASA00173D
48-PIN LQFP-EP
Battery
Reference
VCOM
Battery
Reference
6 Cell
Voltage
Measure
VCOM
Current
Measure
Battery
Reference
EEPROM
Battery
Reference
VPWR1
CT6
CB6
CB6:5_C
CT1
MC33772
RDTX _OUT+
RDTX_OUT-
VCOM
SDA
GPIO1
VPWR2
CT5
CTREF
CB1
CB2:1_C
CGND
VANA
AGND
FAULT
DGND
SDL
SO
CSB
SPI_COM_EN
RESET
SI/RDTX _IN+
SCLK/RDTX _IN-
GPIO2
GPIO3
GPIO4
GPIO0
GPIO5
GPIO6
ISENSE+
ISENSE-
GNDSUB
GNDFLG
CTn
CBn
MCU
GPIOx
CSB
MISO
MOSI
SCLK
VPRE
VPRE
GNDCP
VCP
