bq29400, bq29400A
bq29401, bq29405
SLUS568B – JULY 2003 – REVISED NOVEMBER 2004
www.ti.com
APPLICATION INFORMATION
BATTERY CONNECTIONS
The following diagrams show the TSSOP package device in different cell configurations.
1 VC1
2 VC2
3 VC3
4 GND
OUT 8
VDD 7
CD 6
VC4 5
C
DELAY
1 VC1
2 VC2
3 VC3
4 GND
OUT 8
VDD 7
CD 6
VC4 5
C
DELAY
Figure 3. 4-Series Cell Configuration
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)
6
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