1 Features
1• Compensated end-of-discharge voltage (CEDV)
gauging algorithm
• Supports SMBus host communication
• Flexible configuration for 3- to 5-series
(BQ76920), 6- to 10-series (BQ76930), and 9- to
15-series (BQ76940) li-ion and LiFePO4 batteries
• Supports battery configurations up to 320 Ahr
• Supports charge and discharge current reporting
up to 320 A
• On-chip temperature sensor option
• External NTC thermistor support from companion
AFE
• Full array of programmable protection features
– Voltage, current, and temperature
– System components
• Lifetime data logging
• Supports CC-CV charging, including precharge,
charge inhibit, and charge suspend
• Offers an optional resistor programmable SMBus
slave address for up to eight different bus
addresses
• Drives up to a 5-segment LED or LCD display for
state-of-charge indication
• Provides SHA-1 authentication

2 Applications
• Light electric vehicles (levs): ebikes, escooters,
pedelec, and pedal-assist bicycles
• Power and gardening tools
• Battery backup and uninterruptible power supply
(UPS) systems
• Wireless base station backup systems
• Telecom power systems
• Handheld vacuum cleaners and robot vacuums

3 Description
The Texas Instruments BQ78350-R1A li-ion and
LiFePO4 Battery Management Controller and
companion to the BQ769x0 family of analog front end
(AFE) protection devices provides a comprehensive
set of Battery Management System (BMS)
subsystems, helping to accelerate product
development for faster time-to-market.
The BQ78350-R1A controller and the BQ769x0 AFE
support 3-series to 15-series cell applications. The
BQ78350-R1A device provides an accurate fuel
gauge and state-of-health (SoH) monitor, as well as
cell balancing and a full range of voltage-, current-,
and temperature-based protection features.