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SLUUBH1C–August 2016–Revised March 2018
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Copyright © 2016–2018, Texas Instruments Incorporated
Battery Condition Warnings
Chapter 7
SLUUBH1C–August 2016–Revised March 2018
Battery Condition Warnings
7.1 Battery Low Warning
The bq35100 device can indicate and optionally trigger the ALERT pin when the primary battery voltage
falls below a programmable threshold.
STATUS CONDITION ACTION
Normal Voltage() > BatLow Voltage Set Threshold BatteryAlert()[BATLOW] = 0
Trip
Voltage() ≤ BatLow Voltage Set Threshold for
BATLOW:Delay duration BatLow Voltage Set Time
BatteryAlert()[BATLOW] = 1
CLASS SUBCLASS NAME TYPE SIZE
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
UNIT
Configuration Discharge
BatLow Voltage Set
Threshold
Integer 2 0 5000 2800 mV
Configuration Discharge
BatLow Voltage Set
Time
Integer 1 0 255 10 s
7.2 Temperature Low Warning
The bq35100 device can indicate and optionally trigger the ALERT pin when the primary battery
temperature falls below a programmable threshold.
Status Condition Action
Normal Temperature() > Under Temperature Set Threshold BatteryAlert()[TEMPLOW] = 0
Trip
Temperature() ≤ Under Temperature Threshold for
TEMPLOW:Delay duration for Under Temperature
Set Time duration
BatteryAlert()[TEMPLOW] = 1
Recovery
Temperature() > Under Temperature Clear
Threshold
BatteryAlert()[TEMPLOW] = 0
CLASS SUBCLASS NAME TYPE SIZE
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
UNIT
Configuration Discharge
Under Temperature
Set Threshold
Signed
Integer
2 –400 850 –200 0.1°K
Configuration Discharge
Under Temperature
Set Time
Integer 1 0 255 4 s
Configuration Discharge
Under Temperature
Clear Threshold
Integer 2 0 255 100 0.1°K
7.3 Temperature High Warning
The bq35100 device can indicate and optionally trigger the ALERT pin when the primary battery
temperature rises above a programmable threshold.