1 Features
• Qualified for automotive applications
• AEC-Q100 Qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4B
• Functional Safety-Compliant
– Developed for functional safety applications
– Documentation to aid ISO 26262 system design
– Systematic capability up to ASIL D
– Hardware capability up to ASIL D
• +/- 1.5mV ADC accuracy
• Pin-package and software compatible device
family:
– Stackable monitor 16S (BQ79616-Q1,
BQ79616H-Q1, BQ79656-Q1), 14S (BQ79614-
Q1, BQ79654-Q1), and 12S (BQ79612-Q1,
BQ79652-Q1)
– Standalone monitor 48 V system (BQ75614-
Q1)
• Built-in redundancy path for voltage and
temperature diagnostics
• Highly accurate cell voltage measurements within
128 μs for all cell channels
• Integrated post-ADC configurable digital low-pass
filters
• Supports bus bar connection and measurement
• Built-in host-controlled hardware reset to emulate
POR-like device reset
• Supports internal cell balancing
– Balancing current at 240 mA
– Built-in balancing thermal management with
automatic pause and resume control
• Isolated differential daisy chain communication
with optional ring architecture
• Embedded fault signal and heartbeat through
communication line
• UART/SPI host interface/communication bridge
device BQ79600-Q1
• Built-in SPI master

2 Applications
• Battery Management System (BMS) in hybrid and
electric powertrain systems
• Energy storage battery packs with Battery
Management Systems

3 Description
BQ79612-Q1, BQ79614-Q1, BQ79616-Q1 and
BQ79616H-Q1 provide high-accuracy cell voltage
measurements in less than 200 μs for 12S, 14S
and 16S battery modules in high-voltage battery
management systems in HEV/EV. The family of
monitors offers different channel options in the same
package type, providing pin-to-pin compatibility and
supporting high reuse of the established software
and hardware across any platform. The integrated
front-end filters enable the system to implement
with simple, low voltage rating, differential RC
filters on the cell input channels. The integrated,
post-ADC, low-pass filters enable filtered, DC-like,
voltage measurements for better state of charge
(SOC) calculation. This device supports autonomous
internal cell balancing with temperature monitoring
to auto-pause and resume balancing to avoid an
overtemperature condition.