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