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2 DEVICE INFORMATION
2.1 AVAILABLE OPTIONS
PART NUMBER
PACKAGE
bq27500DRZR
bq27500DRZT
12-pin, 2,5 mm x 4,0 mm
(2)
bq27501DRZR
(2)
bq27501DRZT
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) Product Preview
2.2 PIN DIAGRAMS
BAT_LOW _
1
BI/TOUT
2
TS
3
BAT
4
5
V
CC
V
6
SS
2.3 TERMINAL FUNCTIONS
TERMINAL
NAME
NAME
PIN NO.
bq27500
bq27501
1
BAT_LOW BAT_LOW
2
BI/TOUT
BI/TOUT
3
TS
TS
4
BAT
BAT
5
V
V
CC
CC
6
V
V
SS
SS
7
SRP
SRP
8
SRN
SRN
9
NC
RID
10
SDA
SDA
11
SCL
SCL
12
BAT_GD
BAT_GD
(1) I/O = Digital Input/Output, IA = Analog Input, P = Power Connection
Submit Documentation Feedback
(1)
T
–40 C to 85 C
SON
BAT_GD
12
SCL
11
SDA
10
bq27500
NC
9
SRN
8
SRP
7
(1)
I/O
Battery Low output indicator. Active high by default, though polarity can be configured
O
through the [BATL_POL] in Operation Configuration Push-pull output.
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor
I/O
multiplexer control pin. Open-drain I/O. use with pull-up resistor > 1M
P
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input.
I
Cell-voltage measurement input. ADC input.
P
Processor power input. Decouple with 0.1μF capacitor, minimum.
P
Device ground.
Analog input pin connected to the internal coulomb-counter where SRP is nearest the
IA
CELL- connection. Connect to 5-20m
Analog input pin connected to the internal coulomb-counter where SRN is nearest the
IA
PACK- connection. Connect to 5-20m
No connection (bq27500). Resistor ID input (bq27501). Analog input with current sourcing
–, I
capabilities.
2
Slave I
C serial communications data line for communication with system (Master).
I/O
Open-drain I/O. Use with 10k
2
Slave I
C serial communications clock input line for communication with system (Master).
I
Open-drain I/O. Use with 10k
Battery Good indicator. Active low by default, though polarity can be configured through
O
the [BATG_POL] of Operation Configuration. Open-drain output.
System-Side Impedance Track™ Fuel Gauge
COMMUNICATION
A
FORMAT
2
I
C
BAT_LOW _
1
BI/TOUT
2
3
TS
4
BAT
5
V
CC
6
V
SS
DESCRIPTION
sense resistor.
sense resistor.
pull-up resistor (typical).
pull-up resistor (typical).
SLUS785 – SEPTEMBER 2007
TAPE and REEL
QUANTITY
3000
300
3000
300
12
BAT_GD
SCL
11
10
SDA
bq27501
RID
9
SRN
8
SRP
7
(1.8M
DEVICE INFORMATION
bq27500
bq27501
typical)
3
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