MC33771C: 14-Channel Li-ion Battery Cell Controller IC

Overview

Features

Features

MC33771 and MC33664 High-Voltage Battery Management System

MC33771 and MC33664 High-Voltage Battery Management System

High Voltage Battery Management System Featuring NXP’s MC33771C

High Voltage Battery Management System Featuring NXP’s MC33771C thumbnail

Key Parametrics

  • Cell Voltage Measurement Channel
    7 to 14, 7 to 8
  • Cell OV/UV
    yes
  • Cell Balancing
    yes
  • Coulomb Count
    no, yes
.

Target Applications

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)

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