BQ27541-V200_1007 Datasheet, PDF (2/43 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27541-V200
SLUSA11 – FEBRUARY 2010
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DEVICE INFORMATION
AVAILABLE OPTIONS
PRODUCTION
PART #⁽¹⁾
bq27541DRZR-V200
bq27541DRZT-V200
PACKAGE
12-pin, 2,5-mm × 4-mm SON
TA
–40°C to 85°C
(1) bq27541-V200 is shipped in I2C mode
bq27541PIN DIAGRAMS
(TOP VIEW)
COMMUNICATION
FORMAT
I2C, HDQ⁽¹⁾
TAPE and REEL
QUANTITY
3000
250
SE ¹
REG25 2
REGIN ³
BAT ⁴
V_CC ⁵
V_SS ⁶
bq27541-V200
12 HDQ
11 SCL
10 SDA
9 _TS
8 SRN
7 _SRP
PIN
NAME
NO.
BAT
4
REG25
2
REGIN
3
SCL
11
SDA
10
SE
1
HDQ
12
SRN
8
SRP
7
TS
9
Vcc
5
Vss
6
TYPE ⁽¹⁾
I
P
P
I
I/O
O
I/O
IA
IA
IA
P
P
PIN FUNCTIONS
DESCRIPTION
Cell-voltage measurement input. ADC input. Decouple with 0.1mF capacitor.
2.5V output voltage of the internal integrated LDO. Connect a minimum 0.47mF ceramic capacitor.
The input voltage for the internal integrated LDO. Connect a 0.1mF ceramic capacitor.
Slave I²C serial communications clock input line for communication with system (Slave). Use with 10kΩ
pull-up resistor (typical).
Slave I²C serial communications data line for communication with system (Slave). Open-drain I/O. Use
with 10kΩ pull-up resistor (typical).
Shutdown Enable output. Push-pull output.
HDQ serial communications line (Slave). Open-drain.
Analog input pin connected to the internal coulomb counter where SRN is nearest the PACK- connection.
Connect to 5-mΩ to 20-mΩ sense resistor.
Analog input pin connected to the internal coulomb counter where SRP is nearest the CELL- connection.
Connect to 5-mΩ to 20-mΩ sense resistor
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input
Processor power input. The minimum 0.47mF capacitor connected to REG25 should be close to Vcc.
Device ground
(1) I/O = Digital input/output, IA = Analog input, P = Power connection
2
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