Audio
Interfaces
Peripherals and Logic
Power Management
Sensors
RF
RFID/NFC
Security and Authentication
Wireless Connectivity
Browse all products
Product Information
Application-Specific Products
NXP Community
Design ideas, demo videos, quality answers. Connect with NXP professionals and other knowledgeable designers ready to help.
Design Resources
Software, documentation, evaluation tools. The resources to build comprehensive solutions and accelerate your time to market.
Access our design resource library
Careers at NXP
We're always looking for passionate and talented people to work with us.
Join our teamMC33771B: 14-Channel Li-ion Battery Cell Controller IC
Overview
Features
Features
Supply Voltage
- 9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient
Advanced Voltage and Temperature Measurement
- 14 Cell Voltage Measurement Channels
- Total Stack Voltage Measurement
- 0.8 mV maximum total voltage measurement error
- 7 ADC/GPIO/Temperature Sensor Inputs
Synchronized Advanced Current Measurement
- Integrated Current sensor with PGA
- ±0.5% accuracy from milliamps to kiloamps
- Integrated Coulomb Counter
Onboard Passive Balancing
- Onboard 300mA Low Rdson passive cell balancing MOSFETs with diagnostics
- Balancing in Sleep mode
- Programmable balancing timer for each MOSFET
Isolated Daisy Chain or SPI communication
- 2.0 Mbps, 2 wire twisted pair differential, isolated
- Addressable on initialization
- 4Mbps SPI
Diagnostics, Functional Safety and Robustness
- OV/UV, OT/UT, OC fault verification
- Sleep mode OV/UV, OT/UT monitoring
- Support ISO 26262, up to ASIL D safety capability
- Hot plug capable and AEC Q-100
Product Longevity Program
- This product is included in the NXP Product Longevity program ensuring a stable supply of products for your embedded designs. MC33771B is included in the 15-year program.
Full Datasheet and more documentation are available on docstore.nxp.com (NDA required).
Key Parametrics
-
- Cell Voltage Measurement Channel
- 7 to 14, 7 to 8
-
- Cell OV/UV
- yes
-
- Cell Balancing
- yes, no
-
- Coulomb Count
- no, yes
-
- Number of Battery Cells
- 8, 14
Development Boards and Designs
BATT-14AAAPACK:Configurable Battery Pack to supply the MC33771/MC33772 EVB’s
FRDM33664BEVB:Evaluation Board for MC33664ATL Isolated Network High-Speed Transceiver
FRDM33771BSPIEVB:Evaluation board for MC33771 with SPI Communication
FRDM33771BTPLEVB:Evaluation board for MC33771 with Isolated Daisy Chain CommunicationDevelopment Boards and Designs
BATT-14AAAPACK:Configurable Battery Pack to supply the MC33771/MC33772 EVB’sFRDM33664BEVB:Evaluation Board for MC33664ATL Isolated Network High-Speed TransceiverFRDM33771BSPIEVB:Evaluation board for MC33771 with SPI CommunicationFRDM33771BTPLEVB:Evaluation board for MC33771 with Isolated Daisy Chain Communication
BATT-14EMULATOR:14-cell Battery Pack to supply MC33771 EVBs
FRDMDUAL33664EVB:Evaluation Board for MC33664ATL Isolated Network High-Speed Transceiver
RD33771-48VEVM Reference Design
RD33771CNTREVM: Flexible BMS Reference Design.
Target Applications
Automotive
Industrial
- E-bikes, E-scooters
- Energy Storage Systems (ESS)
- Uninterrupted Power Supply (UPS)
Comparison Table
| Parameter | MC33772B | MC33771B | MC33771C |
| Voltage Channels | 3..6 | 7..14 | 7..14 |
| Supply VRange (Max) | 6 V..30 V (40 V) | 9.6 V..61.6 V (75 V) | 9.6 V..61.6V (75 V) |
| Cell Input Voltage Range | -0.3 V to 5 V | -0.3 V to 5 V | -0.3 V to 5 V |
| Measurement Error | ± 0.8 mV (Vcell =3.3 v Ta = 25°c) | ± 0.8 mV (Vcell =3.3 v Ta = 25°c) | ± 0.8 mV (Vcell =3.3 v Ta = 25°c) |
| Total Measurement Error (After aging: MLS3 & 1000h HTOL) |
± 3.9 mV | ± 3.9 mV | ± 3.9 mV |
| Vpwr=6V..30V, Vcell=1.5V..4.3V, -40~85°C |
Vpwr=9.6V..61.6V, Vcell=1.5V..4.3V, -40~85°C |
Vpwr=9.6V..61.6V, Vcell=1.5V..4.3V, -40°C..85°C |
|
| Measurement averaging | No | No | Configurable Averaging Samples 2n n=0..8, (1,2,4,..256) |
| Functional Safety |
ASIL C ASIL D Compliance |
ASIL C ASIL D Compliance |
ASIL C ASIL D Compliance |
| Isolated communication Speed | 2 Mbps | 2 Mbps | 2 Mbps |
| Communication Isolation | Inductive | Inductive | Inductive, Capacitive |
| Max Nodes per Daisy Chain | 15 | 15 | 63 |
| CRC Bit | 8 | 8 | 8 |
| Comms bit | 40 | 40 | 48 |
| Integrated Balancing | <300 mA, Timer | <300 mA, Timer | <300 mA, Timer |
| Balancing sleep mode | Yes | Yes | Yes |
| GPIO / Analog measurement inputs | 7 | 7 | 7 |
| I2C Master | EEPROM Only | EEPROM Only | EEPROM Only |
| Current Channels | 1 | 1 | 1 |
| Coulomb counter | 1 | 1 | 1 |
| Package | 48-pin LQFP-EP (-40~105°C) | 64-pin LQFP-EP (-40~105°C) | 64-pin LQFP-EP (-40~105°C) |
