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BQ29311 Datasheet(PDF) 6 Page - Texas Instruments

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Part # BQ29311
Description  THREE AND FOUR CELL LITHIUM ION OR LITHIUM POLYMER BATTERY PROTECTION IC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ29311 Datasheet(HTML) 6 Page - Texas Instruments

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bq29311
SLUS487D − DECEMBER 2001 − REVISED NOVEMBER 2003
www.ti.com
6
FUNCTIONAL BLOCK DIAGRAM
OCVD/OCVC
SCV
OCD/SCD
Control
Cell
SDV
Communication
Over-Current
Short-Current
Sensing
VREF
Startup
Input
Shutdown
Monitor
Delay
Control
CLKGEN
3.3V
Regulator
EN
Thermistor Drive
Status
Logic
Cell
Select
Balance
Cell
Voltage
Monitor
SCLK
SDATA
GND
SR2
SR1
VBAT
VCC
DSG
CHG
VPACK
VC1
VC2
VC3
VC4
VC5
CNTL
PCHG
VREG
To internal
Circuitry
CHG/DSG
Output Control
Back-Up
CLK
Status
Pack−
Pack+
TOUT
LEDOUT
VREG
XALERT
CLKIN
VCELL
GND
18
VREG
20
LED Drive
CNTL
VREG
10k
10k
100k
100k
1uA
PCHG
Output Control
− OC for Discharge
− OC for Charge
− SC for Discharge
− SC for Charge
− Brownout
Input
Brownout
Monitor
19
24
17
16
12
11
15
20
22
21
23
1
10
2
3
4
5
13
9
8
7
6
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