BQ29311_15 Datasheet, PDF (6/24 Pages) Texas Instruments – FOUR-CELL LITHIUM-ION

Not Recommended for New Designs
bq29311
SLUS487D − DECEMBER 2001 − REVISED NOVEMBER 2003
FUNCTIONAL BLOCK DIAGRAM
www.ti.com
Pack+
CNTL
Pack−
CNTL
10
VCC
1
VREG
1uA
VBAT
2
DSG
23
CHG
21
PCHG
22
CHG/DSG
Output Control
PCHG
Output Control
VC1
3
VC2
4
VC3
5
VC4
6
VC5
7
SR1
8
SR2
9
Cell
Select
Balance
Cell
Voltage
Monitor
Delay
Control
CLKGEN
Back-Up
CLK
Over-Current
Short-Current
Sensing
VREF
Startup
GND
13
Cell
Select
OCVD/OCVC
SCV
OCD/SCD Control
Status
VREG
10k
Communication
VPACK
24
Thermistor Drive 18 TOUT
3.3V
Regulator
EN
LED Drive
20 LEDOUT
Input
Shutdown
Monitor
To internal
Circuitry
19 VREG
100k
Input
Brownout
Monitor
SDV
Status
Logic
17 XALERT
100k
− OC for Discharge
− OC for Charge
− SC for Discharge
− Brownout
− SC for Charge
16 CLKIN
VCELL
12
VREG
10k
11 GND
20
SCLK
15
SDATA
6