BQ27541-V200_17 Datasheet, PDF (2/46 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27541-V200
Not Recommended for New Designs
SLUSA11B – FEBRUARY 2010 – REVISED SEPTEMBER 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
DEVICE INFORMATION
AVAILABLE OPTIONS
PRODUCTION
PART #⁽¹⁾
bq27541DRZR-V200
bq27541DRZT-V200
PACKAGE
12-pin, 2.5-mm × 4-mm SON
(1) bq27541-V200 is shipped in I2C mode
TA
–40°C to 85°C
COMMUNICATION
FORMAT
I2C, HDQ⁽¹⁾
bq27541PIN DIAGRAMS
(TOP VIEW)
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
TAPE and REEL
QUANTITY
3000
250
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 0.1μF capacitor.
2.5V output voltage of the internal integrated LDO. Connect a minimum 0.47μF ceramic capacitor.
The input voltage for the internal integrated LDO. Connect a 0.1μF 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 0.47μF 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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