BQ29209-Q1 Datasheet, PDF (11/23 Pages) Texas Instruments – Voltage Protection with Automatic Cell Balance

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Feature Description (continued)
bq29209-Q1
SLUSC62A – JUNE 2015 – REVISED MARCH 2016
V_CELL
V_CELL±V_CB
1 VC2
OUT 8
2 VC1
VDD 7 I_CB
______
I_CB
3 VC1_CB CB_EN 6
I_{CB_EN}
4 CD
GND 5
Figure 8. I_CB Measurement
8.4 Device Functional Modes
This device monitors the voltage of the cells connected to the VCx pins and depending on these voltages and the
overall battery voltage at VDD the device enters different operating modes.
8.4.1 NORMAL Mode
The device is operating in NORMAL mode when the cell voltage range is between the over-charge detection
threshold (V_PROTECT) and the minimum supply voltage.
If this condition is satisfied, the device turns OFF the OUT pin.
8.4.2 PROTECTION Mode
The device is operating in PROTECTION mode when the cell over voltage protection feature has been triggered.
See Cell Voltage > V_PROTECT for more details on this feature.
If this condition is satisfied, the device turns ON the OUT pin.
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