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BQ76907
SLUSE96 – NOVEMBER 2023
7 Detailed Description
7.1 Overview
The BQ76907 device is a highly integrated, accurate battery monitor and protector for 2-series to 7-series
Li-ion, Li-polymer, LiFePO
measurement provides data for host-based algorithms and control. A feature-rich and highly configurable
protection subsystem provides a wide set of protections, which can be triggered and recovered completely
autonomously by the device or under full control of a host processor. Integrated FET drivers drive low-side
charge and discharge protection NFETs. A programmable LDO is included for external system use, with voltage
programmable to 1.8 V, 2.5 V, 3.0 V, 3.3 V, or 5.0 V, capable of providing up to 20 mA.
The BQ76907 device includes one-time-programmable (OTP) memory, which TI programs to configure default
device operation settings, for systems where a host processor may not be available to configure the device. A
2
400-kHz I
C communication interface and ALERT interrupt output enable communication with a host processor.
The device includes support for one external thermistor, as well as an internal die temperature measurement.
7.2 Functional Block Diagram
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
TS
VSS
SCD
OCD1
OCD2
OCC
7.3 Device Configuration
7.3.1 Commands and Subcommands
The BQ76907 device includes support for direct commands and subcommands. The direct commands are
accessed using a 7-bit command address that is sent from a host through the device serial communications
26
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(LFP), and LTO battery packs. A high-accuracy voltage, current, and temperature
4
MUX
Pullup resistor
Internal LDO
-
Coulomb
£
Counter
Product Folder Links:
VREF1
-
ADC
¡
¢
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
BQ76907
VREF2
Internal LDO
OSC
LDO
1.8 / 2.5 / 3.0 /
3.3 /
5 V
CHG / DSG
Drivers
Digital Core
I2C
Registers
OTP
Trim & Settings
Copyright © 2023 Texas Instruments Incorporated
www.ti.com
BAT
REGSRC
REGOUT
CHG
DSG
ALERT
SDA
SCL
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