1 Features
• Battery monitoring capability for 3-series to 16-
series cells
• High accuracy cell voltage measurement of ±3.0
mV
• Integrated charge pump for high-side NFET
protection with optional autonomous recovery
• Extensive protection suite including voltage,
temperature, current, and internal diagnostics
• Two independent ADCs
– Support for simultaneous current and voltage
sampling
– High-accuracy coulomb counter with input
offset error < 1 μV (typical)
• Wide-range current applications (±200-mV
measurement range across sense resistor)
• Integrated secondary chemical fuse drive
protection
• Autonomous or host-controlled cell balancing
• Multiple power modes (typical battery pack
operating range conditions)
– NORMAL mode: 286 μA
– Multiple SLEEP mode options: 24 μA to 41 μA
– Multiple DEEPSLEEP mode options: 9 μA to 10
μA
– SHUTDOWN mode: 1 μA
• High-voltage tolerance of 85 V on cell connect and
select additional pins
• Tolerant of random cell attach sequence on
production line
• Support for temperature sensing using internal
sensor and up to nine external thermistors
• Integrated one-time-programmable (OTP) memory
programmable by customers on production line
• Communication options include 400-kHz I2C, SPI,
and HDQ one-wire interface
• Dual-programmable LDOs for external system
usage
• 48-pin TQFP package (PFB)

2 Applications
• Energy storage systems
• Battery backup unit (BBU)
• E-bike, e-scooter, and LEV
• Cordless power tools and garden tools
• Non-military drones
• Other industrial battery pack (≥10series)
3 Description
The Texas Instruments BQ76972 device is a
highly integrated, high-accuracy battery monitor
and protector for 3-series to 16-series Li-ion, Lipolymer,
and LiFePO4 battery packs. The device
includes a high-accuracy monitoring system, a
highly configurable protection subsystem, and support
for autonomous or host controlled cell balancing.
Integration includes high-side charge-pump NFET
drivers, dual programmable LDOs for external system
use, and a host communication peripheral supporting
400-kHz I2C, SPI, and HDQ one-wire standards.
The BQ76972 device is available in a 48-pin TQFP
package.