MC33771B: 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
- 7.0 to 14, 7.0 to 8
-
- Cell OV/UV
- yes
-
- Cell Balancing
- no, yes
-
- Coulomb Count
- yes, no
-
- Number of Battery Cells
- 14, 8
-
- Supply Voltage [Min to Max] (V)
- 7.6 to 61.6, 7.0 to 8, 7.0 to 14
Development Boards
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
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.
Target Applications
Automotive
Industrial
- E-bikes, E-scooters
- Energy Storage Systems (ESS)
- Uninterrupted Power Supply (UPS)