BQ27510_08 Datasheet, PDF (2/36 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection

bq27510
SLUS816A – MARCH 2008 – REVISED JUNE 2008.......................................................................................................................................................... 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
PART NUMBER
PACKAGE ⁽¹⁾
bq27510DRZR
bq27510DRZT
12-pin, 2,5-mm × 4-mm SON
TA
–40°C to 85°C
COMMUNICATION
FORMAT
I²C
TAPE and REEL
QUANTITY
3000
250
(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.
PIN DIAGRAM
BI/TOUT ¹
REG25 2
REGIN ³
BAT ⁴
Vcc ⁵
Vss ⁶
bq27510
12 _{BAT_LOW/BAT_GD}
11 SCL
10 SDA
9 _TS
8 SRN
7 SRP
TERMINAL
NAME
NO.
BI/TOUT
1
REG25
2
REGIN
3
BAT
4
Vcc
5
Vss
6
SRP
7
SRN
8
TS
9
SDA
10
SCL
11
BAT_LOW/ 12
BAT_GD
TYPE ⁽¹⁾
TERMINAL FUNCTIONS
DESCRIPTION
I/O
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor-multiplexer control
pin. Push-pull I/O. Use with pull-up resistor >1MΩ (1.8 MΩ typical).
P
2.5 V output voltage of the internal integrated LDO. Connect a 0.47µF ceramic capacitor.
P
The input voltage for the internal integrated LDO. Connect a 0.1µF ceramic capacitor.
I
Cell voltage measurement input. ADC input.
P
Processor power input. The 0.47µF ceramic capacitor connected to REG25 should be close to Vcc.
P
Device ground
IA
Analog input pin connected to the internal coulomb counter where SRP is nearest the Vss connection.
Connect to 5-mΩ to 20-mΩ sense resistor.
IA
Analog input pin connected to the internal coulomb counter where SRN is nearest the system PACK–
connection. Connect to a 5-mΩ to 20-mΩ sense resistor.
IA
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input
I/O
Slave I²C serial communications data line for communication with system (Master). Open-drain I/O.
Use with 10-kΩ pull-up resistor (typical).
I
Slave I²C serial communications clock input line for communication with system (Master). Open-drain
I/O. Use with 10-kΩ pull-up resistor (typical).
O
Battery-good or Battery-low output indicator. Desired function polarity selected through the Operation
Configuration register. Open-drain output
(1) I/O = Digital inptu/output; IA = Analog input; P = Power connection.
2
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