Datasheet

bq76925
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BAT
VC6
VC5
VC4
VC3
VC2
VC1
VC0
SENSEN
SENSEP
VCTL
V3P3
SCL
SDA
VREF
VTB
VCOUT
VIOUT
ALERT
PACK+
PACK-
R
SENSE
R
NTC
R
TH
VSS
µController
Example:
MSP430x20x2
or
equivalent
FET Driver Circuits
DVCC
SCL
SDA
VeREF+
A2
A1
A0
NMI
AVCC
DVSS
AVSS
VeREF-
P2.6 P2.7
P1.5 COMM
Note: Some components
omitted for clarity.
Example only. Not required.
bq76925
SLUSAM9B –JULY 2011– REVISED DECEMBER 2011 www.ti.com
OPERATIONAL OVERVIEW
INTRODUCTION
The bq76925 Host controlled analog front end (AFE) is part of a complete pack monitoring, balancing and
protection system for 3 to 6 series cell Lithium batteries. The bq76925 allows a Host controller to easily monitor
individual cell voltages, pack current and temperature. This information can be used by the Host to detect and
act on a fault condition caused when one or more of these parameters exceed the limits of the application. In
addition, this information may be used by the Host to determine end-of-charge, end-of-discharge and other
gas-gauging and state of health conditions.
Figure 2. Example of bq76925 With Host Controller
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Product Folder Link(s): bq76925