BQ27742-G1 Datasheet, PDF (17/46 Pages) Texas Instruments – Single-Cell Li-Ion Battery Fuel Gauge with Programmable Hardware Protection

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7.2 Functional Block Diagram
bq27742-G1
SLUSBV9C – MARCH 2014 – REVISED FEBRUARY 2016
VPWR
BAT
REG25
TS
NC
RC2
VSS
POR
+
0.3 V
–
Wake
Comparator
LDO
–
V_UVP
+
+
UVP
Delay
+
+
V_OVP
–
4R
2.5 V
HFO
HFO
OVP
Delay
LFO
Protector
FSM
R
5 kΩ
MUX
HFO/128
ADC
VPWR
Internal
Temp
Sensor
SCD
Delay
CC
+
HFO/128
–
+
V_SCD
+
–
V_OCD
OCD
Delay
OCC
Delay
+
VPWR
20 kΩ
–
V_OCC
+
+
360 kΩ
CHG Drive
DSG Drive
HFO /4
22
Instruction
ROM
22
CPU
I²C Engine
I/O
Controller
Instruction
FLASH
Wake
and
Watchdog
Timer
GP Timer
and
PWM
Data
SRAM
8
8
Data
FLASH
HDQ
Engine
SRN
SRP
PACKP
CHG
DSG
SDA
SCL
HDQ
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