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NXP Semiconductors Electronic Components Datasheet

MC33771B_SDS Datasheet

Battery cell controller IC

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MC33771B_SDS
Battery cell controller IC
Rev. 5.0 — 2 May 2018
Short data sheet: technical data
1 General description
The 33771 is a SMARTMOS lithium-ion battery cell controller IC designed for automotive
applications, such as hybrid electric (HEV) and electric vehicles (EV) along with industrial
applications, such as energy storage systems (ESS) and uninterruptible power supply
(UPS) systems.
The device performs ADC conversions of the differential cell voltages and current, as well
as battery coulomb counting and battery temperature measurements. The information is
digitally transmitted through the Serial Peripheral Interface (SPI) or Transformer Isolation
(TPL) to a microcontroller for processing.
2 Features
9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient
7 to 14 cells management
Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI
Addressable on initialization
0.8 mV maximum total voltage measurement error
Synchronized cell voltage/current measurement with coulomb count
Total stack voltage measurement
Seven GPIO/temperature sensor inputs
5.0 V at 5.0 mA reference supply output
Automatic over/undervoltage and temperature detection routable to fault pin
Integrated sleep mode over/undervoltage and temperature monitoring
Onboard 300 mA passive cell balancing with diagnostics
Hot plug capable
Detection of internal and external faults, as open lines, shorts, and leakages
Designed to support ISO 26262, up to ASIL D safety capability
Fully compatible with the MC33772 for a maximum of six cells
Qualified in compliance with AECQ-100


NXP Semiconductors Electronic Components Datasheet

MC33771B_SDS Datasheet

Battery cell controller IC

No Preview Available !

NXP Semiconductors
MC33771B_SDS
Battery cell controller IC
3 Simplified application diagram
14 cell
voltage
measure
current
measure
VPWR1
VPWR2
CT14
CB14
+
CB14:13_C
CT13
CTn
CBn
CT1
CB2:1_C
+
CB1
CTREF
battery reference GNDREF
GNDFLG
ISENSE+
ISENSE-
MC33771
RDTX_OUT+
RDTX_OUT-
VCOM
VCOM
CGND
VANA
AGND
DGND
battery
reference
battery
reference
FAULT
SDA
SCL
SPI_COM_EN
FAULT
EEPROM
(OPTIONAL)
VCOM
GPIOy
RESET
GPIOx
CSB
CSB
SO MISO
SI/RDTX_IN+
SCLK/RDTX_IN-
MOSI
SCLK
MCU
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
VCOM
Figure 1. Simplified application diagram, SPI use case
battery
reference
aaa-027844
MC33771BSDS
Short data sheet: technical data
All information provided in this document is subject to legal disclaimers.
Rev. 5.0 — 2 May 2018
© NXP B.V. 2018. All rights reserved.
2 / 29


Part Number MC33771B_SDS
Description Battery cell controller IC
Maker NXP
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