BQ294602_17 Datasheet, PDF (11/21 Pages) Texas Instruments – Single-Cell Protector for Li-Ion Batteries

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bq294602, bq294604, bq294682, bq294624
SLUSAS0D – DECEMBER 2011 – REVISED APRIL 2017
9.2.2 Detailed Design Procedure
1. Determine the overvoltage protection and delay. Select a device with the corresponding thresholds.
2. Follow the application schematic (see Figure 8) to connect the device.
3. Ensure both Vss pins are connected to the CELL– terminal on the PCB layout.
9.2.3 Application Curves
4.38
Min
4.37
Max
Mean
4.36
4.35
4.34
4.33
4.32
4.31
-40
-20 0 20 40 60 80 100
Temperature (qC)
Figure 9. OVT vs Temperature
120
D002
325
324
323
322
321
320
319
318
317
316
315
-40
-20 0 20 40 60 80 100
Temperature (qC)
Figure 10. V_HYS vs Temperature
120
D003
9.3 System Example
Pack +
VCELL
1K
0.1 µF
bq2946xx
NC
OUT
V1
VDD
VSS
VSS
100
0.1 µF
Pack –
Figure 11. 1-Cell Configuration With Fixed Delay
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