Datasheet

FUNCTIONAL BLOCK DIAGRAM
GND
Ove
rcurrent
CELL1..10
SRBGND
SRPGND
Sh
ort-Circuit
Dela
y
GPOD
Undervoltage
PACK
CHG
DSG
PACK–
VC7
VC
8
VC
11
CELL 8 C
ELL 7
VC9
VC10
C
ELL 10
CELL 9
XAL
ERT
SDATA
Status
Output Ctl
OV/UV
OLD/OLV
SCC
SCD
Registers
PACK+
VC3
VC4
CELL
4
CELL 3
VC5
CELL 6 CEL
L 5
CEL
L 2
CE
LL 1
V
C6
VC1
VC2
TOUT
C
THERM
VREG1
5 V LDO
R
THER
M
3.3 V LDO
V
REG2
SCLK
Cell Bal
+
IOUT
XRST
EEPROM
VLOG
CPOUT
C
ell AMP
C
ELL OUT
B
AT
Overvoltage
0.98 V
Control
EE
PROM
CNF2
C
NF1
CNF
0
ZEDE
TIN
Option
P
MS
Buffer
Level
State
Control
OpenDrain
Ooutput
Serial
Interface
Thermal
Shutdown
CP1
CP2
CP3
CP4
ChargePump
StepDown
PCHGate
Driver
PCHGate
Driver
Short-Circuit
Comparator
Overload
Comparator
´ ´10or 50
Cell
Selection
Switches
B0325-01
bq77PL900
SLUS844B – JUNE 2008 – REVISED JANUARY 2009 ...................................................................................................................................................... www.ti.com
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