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BQ769142
SLUSE91A – SEPTEMBER 2020 – REVISED FEBRUARY 2021
8.3 Functional Block Diagram
Charger
PACK
Detect
BAT
Load
BAT
Detect
LD
VC14
VC13B
VC12B
VC11
VC10
VC9
VC8
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
Pullup source &
switching control
TS1
TS2/WAKE
TS3
VC8
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
8.4 Diagnostics
The BQ769142 device includes a suite of diagnostic tests the system can use to increase operational
robustness. These tests include comparisons between the two voltage references integrated within the device, a
hardware monitor of the LFO frequency, memory checks at power-up or reset, an internal watchdog on the
embedded processor, and more. These are described in detail in the
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Charge
To Digital
To Digital
CHG/DSG
drivers
MUX1
&
MUX2
VREF2
VC14
VC13A
VC13B
VC12A
VC12B
VREF2
VC11
VC10
VC9
SCD, OCD1,
VC8
OCD2, OCC
Product Folder Links:
PACK
Internal
Pump
LDO
BAT
OSCs
Digital Core
VREF1
4-G ADC
OV, UV, OW
Fuse Detect
4-G ADC
Coulomb Counter
& Wakeup
BQ769142 Technical Reference
BQ769142
www.ti.com
> K[•
1.8V / 2.5V / 3.0V /
3.3V / 5V
FUSE
FUSE
Driver
CFETOFF/SPI_CS/
TS/ADCIN/GPO
DFETOFF/BOTHOFF/
TS/ADCIN/GPO
CHG/DSG
CHG
Drivers
DSG
PCHG Driver
PCHG
PDSG Driver
PDSG
HDQ/
SPI_MOSI/TS/
ADCIN/GPO
DCHG/TS/
ADCIN/GPO
DDSG/TS/
ADCIN/GPO
ALERT/HDQ/TS/
ADCIN/GPO
SDA/SPI_MISO
I2C / SPI
SCL/SPI_SCLK
Reset/
RST_SHUT
shutdown
Registers
OTP
Customer Settings
Manual.
Copyright © 2021 Texas Instruments Incorporated
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