BQ29400 Datasheet, PDF (6/10 Pages) Texas Instruments – VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Lion BATTERIES

bq29400, bq29400A
bq29401, bq29405
SLUS568B – JULY 2003 – REVISED NOVEMBER 2004
APPLICATION INFORMATION
BATTERY CONNECTIONS
The following diagrams show the TSSOP package device in different cell configurations.
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1 _VC1
2 _VC2
3 _VC3
4 _GND
OUT ⁸
VDD ⁷
CD ⁶
VC4 ⁵
C_DELAY
Figure 3. 4-Series Cell Configuration
1 _VC1
2 _VC2
3 _VC3
4 _GND
OUT ⁸
VDD ⁷
CD ⁶
VC4 ⁵
C_DELAY
Figure 4. 3-Series Cell Configuration
(Connect together VC1 and VC2)
1 _VC1
2 _VC2
3 _VC3
4 _GND
OUT ⁸
VDD ⁷
CD ⁶
VC4 ⁵
C_DELAY
Figure 5. 2-Series Cell Configuration (Connect together VC1, VC2, and VC3)
CELL CONNECTIONS
To prevent incorrect output activation the following connection sequences must be used.
4-Series Cell Configuration
• VC1(=VDD) → VC2 → VC3 → VC4 → GND or
• GND → VC4 → VC3 → VC2 → VC1(=VDD)
3-Series Cell Configuration
• VC1(=VC2=VDD) → VC3 → VC4 → GND or
• GND → VC4 → VC3 → VC1(=VC2=VDD)
2-Series Cell Configuration
• VC1(=VC2=VC3=VDD) → VC4 → GND or
• GND → VC4 → VC1(=VC2=VC3=VDD)
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