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2DEVICEINFORMATION
2.1AVAILABLEOPTIONS
2.2PINDIAGRAMS
BAT
V
SS
SRN
SRP
V
CC
BAT_GD
SDA
SCL
1
2
3
4
5
6
12
11
10
9
8
7
BAT_LOW_
TS
1
2
3
4
5
6
12
11
10
9
8
7
BI/TOUT
BAT
V
SS
V
CC
BAT_LOW_
TS
BI/TOUT
NC
SRN
SRP
BAT_GD
SDA
SCL
RID
bq27500
bq27501
2.3TERMINALFUNCTIONS
bq27500
bq27501
System-SideImpedanceTrack™FuelGauge
SLUS785–SEPTEMBER2007
COMMUNICATIONTAPEandREEL
PARTNUMBERPACKAGE
(1)
T
A
FORMATQUANTITY
bq27500DRZR3000
bq27500DRZT300
12-pin,2,5mmx4,0mm
–40°Cto85°CI
2
C
SON
bq27501DRZR
(2)
3000
bq27501DRZT
(2)
300
(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
websiteatwww.ti.com.
(2)ProductPreview
TERMINAL
I/O
(1)
DESCRIPTION
NAMENAME
PINNO.
bq27500bq27501
BatteryLowoutputindicator.Activehighbydefault,thoughpolaritycanbeconfigured
1BAT_LOWBAT_LOWO
throughthe[BATL_POL]inOperationConfigurationPush-pulloutput.
Battery-insertiondetectioninput.Powerpinforpackthermistornetwork.Thermistor
2BI/TOUTBI/TOUTI/O
multiplexercontrolpin.Open-drainI/O.usewithpull-upresistor>1MΩ(1.8MΩtypical)
3TSTSPPackthermistorvoltagesense(use103AT-typethermistor).ADCinput.
4BATBATICell-voltagemeasurementinput.ADCinput.
5V
CC
V
CC
PProcessorpowerinput.Decouplewith0.1μFcapacitor,minimum.
6V
SS
V
SS
PDeviceground.
Analoginputpinconnectedtotheinternalcoulomb-counterwhereSRPisnearestthe
7SRPSRPIA
CELL-connection.Connectto5-20mΩsenseresistor.
Analoginputpinconnectedtotheinternalcoulomb-counterwhereSRNisnearestthe
8SRNSRNIA
PACK-connection.Connectto5-20mΩsenseresistor.
Noconnection(bq27500).ResistorIDinput(bq27501).Analoginputwithcurrentsourcing
9NCRID–,I
capabilities.
SlaveI
2
Cserialcommunicationsdatalineforcommunicationwithsystem(Master).
10SDASDAI/O
Open-drainI/O.Usewith10kΩpull-upresistor(typical).
SlaveI
2
Cserialcommunicationsclockinputlineforcommunicationwithsystem(Master).
11SCLSCLI
Open-drainI/O.Usewith10kΩpull-upresistor(typical).
BatteryGoodindicator.Activelowbydefault,thoughpolaritycanbeconfiguredthrough
12BAT_GDBAT_GDO
the[BATG_POL]ofOperationConfiguration.Open-drainoutput.
(1)I/O=DigitalInput/Output,IA=AnalogInput,P=PowerConnection
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