BQ25120A Datasheet, PDF (31/67 Pages) Texas Instruments – Low IQ Highly Integrated Battery Charge Management Solution for Wearables and IoT

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9.4 Device Functional Modes
FUNCTION
VOVP
VUVLO
VBATUVLO
VINDPM
SYS
LS/LDO
BATFET
TS
IPRETERM
ISET
ILIM
MR input
LSCTRL input
RESET output
INT output
I²C interface
CD input
PG output
VBMON
Table 10. Modes and Functions
READY (PRIOR
TO I²C) AND
AFTER RESET
Yes
Yes
Yes
Default or
registers
Default or
registers
Default or
registers
Yes
Yes (VIN Valid)
External
External
External
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
HOST MODE
READY (AFTER
I²C)
Yes
Yes
Yes
Default or
registers
Default or
registers
Default or
registers
Yes
Yes (VIN Valid)
Default, registers,
or external
Default, registers,
or external
Default, registers,
or external
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CHARGE
Yes
Yes
Yes
If enabled
If enabled
If enabled
Yes
Yes
Default, registers,
or external
Default, registers,
or external
Default, registers,
or external
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
SHIP MODE
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
bq25120A
SLUSD08 – MAY 2017
HIGH_Z
No
Yes
Yes
No
If enabled
If enabled
Yes
No
No
No
No
Yes
Yes
Yes
No
No
Yes
No
No
ACTIVE
BATTERY
No
Yes
Yes
No
If enabled
If enabled
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
If enabled
Yes
Table 11. Fault and Status Condition Responses
FAULT or STATUS
ACTIONS
VIN_OV
VIN_UV
VIN_ILIM
OVER_TEMP
BAT_UVLO
Update VIN_OV status, Update
STAT to fault, interrupt on INT,
PG shown not good
Update VIN_UV status, Update
STAT to fault, interrupt on INT,
PG shown not good
Update charge in progress
status, interrupt on INT, input
current is limited
Update BAT_UVLO status,
Update STAT to fault, interrupt
on INT
SW_SYS_SHORT
CHARGER
BEHAVIOR
Disabled
Disabled
Enabled, input
current limited
Disabled
Pre-charge
Enabled
LS_LDO_OCP
TIMER fault
Update TIMER, Update STAT
to fault, interrupt on INT
Enabled
Disabled
SYS BEHAVIOR
Enabled through
BAT
LS/LDO
BEHAVIOR
Enabled through
BAT
Enabled through
BAT
Enabled through
BAT
Enabled (if
enabled)
Disabled
Enabled (if
enabled) and VIN
Valid
Current Limit
Enabled (if
enabled)
Enabled (if
enabled)
Enabled (if
enabled)
Disabled
Enabled (if
enabled) and VIN
Valid
Enabled (if
enabled)
Current Limit
Enabled (if
enabled)
TS BEHAVIOR
Disabled
Disabled
Enabled
Disabled
Enabled if VIN
Valid
Enabled
Enabled
Disabled
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