Datasheet

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GND
CELL1..4
SR1
SR2
Overload
Comparator
Short-Circuit
SHORT-CIRCUIT
DELAY
Open-
Drain
Output
Watchdog
Timer
OD
Cell Voltage
Translation
Power
Mode
Circuit
Drive
Control
VCELL
R
SNS
R
CELL
C
CELL
TOUT
R
THERM
C
THERM
THERMISTOR
Cell
Selection
Switches
3.3V LDO
POR
SHIP_ON
SLEEP_ON
BAT PACK REG
C
(REG)
FET
Logic
Gate Driver
CHG_ON
DSG_ON
ZVCHG_ON
DSGCHGZVCHG
PACK-
PACK+
R
(ZVCHG)
PMS
GG VDD
VC1
VC2
VC5
CELL 3
CELL 4
VC3
VC4
CELL 1
CELL 2
GG TS
INPUT
GG ANALOG
INPUT
SLEEP
REG
WDI
SLEEP
CONTROL
32-kHz INPUT
FROM GG
GG INTERFACE
SDATA
ALERT TO GG
OPEN-DRAIN
OUTPUT
GG INTERFACE
SCLK
SDATA
SCLK
XALERT
SERIAL INTERFACE
Status
Output Ctl
State Ctl
Function Ctl
CELL_SEL
OCDV
OCDT
SCC
SCD
Registers
Comparator
OVERCURRENT
REG
200 k
200 k
0.2-A
Current Source
_
+
-
bq29312A
SLUS629A – JANUARY 2005 – REVISED AUGUST 2005
FUNCTIONAL BLOCK DIAGRAM
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