MC33772C | 6-Channel Li-Ion Battery Cell Controller IC

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The MC33772C is a Li-Ion battery cell controller IC designed for automotive and industrial applications such as HEV, EV, ESS, UPS systems.

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

Application Notes

Product Details

Block Diagram

MC33772C Block Diagram

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Features

Supply Voltage

6 V ≤ VPWR ≤ 30 V operation, 40 V transient

Advanced Voltage and Temperature Measurement

6 Cell Voltage Measurement Channels with integrated averaging possible up to 256 samples – (no averaging for MC33772B)
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 daisy chain communication
Inductive and capacitive coupling support –(only transformer coupling for MC33772B)
Up to 63 nodes in one daisy chain – (15 nodes for MC33772B)
Loopback support for 1 daisy chain – (no loopback capability for MC33772B)
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 compliant

Product Longevity Program

This product is included in the NXP Product Longevity program ensuring a stable supply of products for your embedded designs. MC33772C is included in the 15-year program.

Comparison Table

Orderable Part	Number of Channels	OV/UV	Number of GPIOS/AINx	Precision GPIO as Temperature Channels and OT/UT	Current channel or Coulomb Count	Target Application
MC33772CTA1AE	3 to 6	Yes	7	Yes	No	Battery Cell Controller
MC33772CTA2AE	3 to 4	Yes	7	Yes	No	Battery Cell Controller
MC33772CTP1AE	3 to 6	Yes	7	Yes	Yes	Battery Cell Controller
MC33772CTP2AE	3 to 4	Yes	7	Yes	Yes	Battery Cell Controller
MC33772CTC0AE	0	No	7	Yes	Yes	Battery Junction Box Controller
MC33772CTC1AE	0	No	8	Yes	Yes	Battery Junction Box Controller

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=9.6 V..61.6 V, Vcell=1.5 V..4.3 V, -40~85°C	Vpwr=9.6 V..61.6 V, Vcell=1.5 V..4.3 V, -40°C..85°C	Vpwr=6 V..30 V, Vcell=1.5 V..4.3 V, -40~85°C	Vpwr=6 V..30 V, Vcell=1.5 V..4.3 V, -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)

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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.
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