MC33771C | 14-Channel Li-Ion Battery Cell Controller IC

For best experience this site requires Javascript to be enabled. To enable on your browser, follow our accessibility instructions.

Roll over image to zoom in

The MC33771C is a Li-Ion battery cell controller IC designed for automotive and industrial applications such as HEV, EV, ESS, UPS systems. Featuring:

ADC conversions on the differential cell voltages with averaging up to 256 samples and currents as well as coulomb counting and temperature measurements.
Embedded balancing transistors and diagnostics to simplify applications.
Support standard SPI and transformer isolated daisy chain communication (with MC33664) to an MCU for processing and control up to 63 nodes in one daisy chain.
Loopback support for one daisy chain

Data Sheet

Application Notes

Product Details

Block Diagram

MC33771 and MC33664 High-Voltage Battery Management System

Get diagram PDF

Features

Supply Voltage

9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient

Advanced Voltage and Temperature Measurement

14 Cell Voltage Measurement Channels with integrated averaging possible up to 256 samples – (no averaging for MC33771B)
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
Inductive and capacitive coupling support –(only transformer coupling for MC33771B)
Up to 63 nodes in one daisy chain – (15 nodes for MC33771B)
Loopback support for 1 daisy chain – (no loopback capability for MC33771B)
Addressable on initialization
4 Mbps 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. MC33771C is included in the 15-year program.

Part numbers include: MC33771CTA1AE, MC33771CTA2AE, MC33771CTP1AE, MC33771CTP2AE.

Comparison Table

Parameter	MC33771B	MC33771C	MC33772B	MC33772C
Voltage Channels	7..14	7..14	3..6	3..6
Supply V_Range (Max)	9.6 V..61.6 V (75 V)	9.6 V..61.6V (75 V)	6 V..30 V (40 V)	6 V..30 V (40 V)
Cell Input Voltage Range	-0.3 V to 5 V	-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)	± 0.8 mV (Vcell =3.3 v Ta = 25°c)
Total Measurement Error (After aging: MLS3 and 1000h HTOL)	± 3.9 mV	± 3.9 mV	± 3.9 mV	± 3.9 mV
Total Measurement Error (After aging: MLS3 and 1000h HTOL)	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	Vpwr=6V..30V, Vcell=1.5V..4.3V, -40~85°C	Vpwr=6V..30V, Vcell=1.5V..4.3V, -40~85°C
Measurement averaging	No	Configurable Averaging Samples 2ⁿ n=0..8, (1,2,4,..256)	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	ASIL C ASIL D Compliance
Isolated communication Speed	2 Mbps	2 Mbps	2 Mbps	2 Mbps
Communication Isolation	Inductive	Inductive, Capacitive	Inductive	Inductive, Capacitive
Max Nodes per Daisy Chain	15	63	15	63
CRC Bit	8	8	8	8
Comms bit	40	48	40	48
Integrated Balancing	<300 mA, Timer	<300 mA, Timer	<300 mA, Timer	<300 mA, Timer
Balancing sleep mode	Yes	Yes	Yes	Yes
GPIO / Analog measurement inputs	7	7	7	7
I²C Controller	EEPROM Only	EEPROM Only	EEPROM Only	EEPROM Only
Current Channels	1	1	1	1
Coulomb counter	1	1	1	1
Package	64-pin LQFP-EP (-40~105°C)	64-pin LQFP-EP (-40~105°C)	48-pin LQFP-EP (-40~105°C)	48-pin LQFP-EP (-40~105°C)

Battery Management Systems (BMS) Hardware Solutions

Battery management systems (BMS) solutions for automotive and industrial applications including 12 V, 48 V, high-voltage and battery pack monitoring applications.

Find your right solution.

SafeAssure Program

When it comes to functional safety, NXP stands for quality and reliability. Our SafeAssure program simplifies system-level safety requirements in accordance with ISO 26262.
Read more

Buy/Parametrics

‌ ‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌

Documentation

Quick reference to our documentation types.

1-5 of 10 documents

^{Data Sheet}
MC33771C, Battery Cell Controller IC Data Sheet

PDFRev 7.0Jul 16, 20243.6 MBMC33771CEnglish
^{Application Note}
AN12969 Busbar Design Application Note

PDFRev 2May 15, 2023362.6 KBAN12969English, 中文
^{Application Note}
AN12710, Layout Recommendation for Battery Cell Controllers Application Note

PDFRev 2Apr 19, 20233.4 MBAN12710English, 中文
^{Application Note}
AN12637: MC33771C and MC33772C Based System Timing Optimization Application Note

PDFRev 4Apr 18, 20238.0 MBAN12637English
^{Application Note}
AN12626: MC33771x/MC33772x Transformer and Wire Guide on the TPL Network Application Note

PDFRev 2Apr 18, 2023491.5 KBAN12626English, 中文
^{Application Note}
AN13032, MC33771/2 B/C General Purpose Input Output (GPIO) Application Note

PDFRev 1Dec 18, 2020281.0 KBAN13032English
^{Application Note}
AN12576, MC33771x/MC33772x Hot Plug Performance and Prevention Measures Application Note

PDFRev 1Apr 13, 20202.2 MBAN12576English
^{Application Note}
AN12633, Switching from MC33771B to MC33771C Application Note

PDFRev 1Feb 10, 2020444.4 KBAN12633English
^{Application Note}
AN12536, Using MC33771 with Less than 14 Cells Application Note

PDFRev 1Oct 30, 2019307.0 KBAN12536English
^{Product Brief}
MC33771C Battery cell controller IC - Product Brief

PDFRev 2.0May 10, 2022907.3 KBPB_MC33771CEnglish

Show All

Design Resources

Hardware

Quick reference to our board types.

1-5 of 11 hardware offerings

^{Complete Solution}
MPC5775B BMS and VCU Reference Design

RDVCU5775EVM
^{Design Concept}
S32E2 Propulsion Domain Controller (POC)

S32E2POC
^{Embedded Board Solutions}
Embedded SW: Battery Cell Controller Software Driver for MC33771C and MC33772C

EMBEDDED-SW-MC33771C
^{Evaluation and Development Boards}
Evaluation Board for MC33664ATL Isolated Network High-Speed Transceiver

FRDMDUAL33664EVB
^{Evaluation and Development Boards}
Battery Management System (BMS) Communication Monitoring and Debugging Toolkit

KIT-TPLSNIFEVB
^{Evaluation and Development Boards}
MPC5775B and MC33771 high-voltage BMS Evaluation System

MPC5775B-BATTERYSYSTEM
^{Evaluation and Development Boards}
Evaluation Board for MC33771C with SPI Communication

FRDM33771CSPEVB
^{Evaluation and Development Boards}
Battery Emulator Extender

BATT-14EXTENDER
^{Evaluation and Development Boards}
Evaluation Board for MC33771C BCC with Isolated Daisy Chain Communication

RD33771CDSTEVB
^{Evaluation and Development Boards}
Evaluation Board for MC33664ATL Isolated Network High-Speed Transceiver

FRDMDUALK3664EVB
^{Reference Design}
Flexible Battery Management System (BMS) Reference Design

RD33771CNTREVM

Show All

Software

Quick reference to our software types.

1 software file

^Middleware
MC33771C/MC33772C (Battery Cell Controller) Evaluation GUI

EXERev 5.15Jul 8, 2022 13:28:0036.3 MBKIT3377xC_APPSP
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue

Note: For better experience, software downloads are recommended on desktop.

Training

3 trainings

^On-Demand
Smart Cities - Transportation

1 hr 06 minEnglish
Sign in required

^On-Demand
Battery Management Systems 101: Getting Started with NXP System Solutions

1 hr 29 minEnglish Level: Beginner
Sign in required

^On-Demand
Simplify Your High-Voltage BMS Application Design with Ready-to-Use NXP Solutions

48 minEnglish
Sign in required

14-Channel Li-Ion Battery Cell Controller IC

Product Details

Block Diagram

MC33771 and MC33664 High-Voltage Battery Management System

Features

Supply Voltage

Advanced Voltage and Temperature Measurement

Synchronized Advanced Current Measurement

Onboard Passive Balancing

Isolated Daisy Chain or SPI Communication

Diagnostics, Functional Safety and Robustness

Product Longevity Program

Comparison Table

Battery Management Systems (BMS) Hardware Solutions

SafeAssure Program

Related products

Applications

Automotive

Buy/Parametrics

Documentation

Filter by

Design Resources

Hardware

Filter By

Filter By

Software

Filter by

MC33771C/MC33772C (Battery Cell Controller) Evaluation GUI

Filter By

Training

Filter by

Support

What do you need help with?

Suggested Links