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BQ29405DCT3 Datasheet(PDF) 6 Page - Texas Instruments

Part # BQ29405DCT3
Description  VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Lion BATTERIES
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ29405DCT3 Datasheet(HTML) 6 Page - Texas Instruments

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