BQ27531-G1_16 Datasheet, PDF (3/34 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge

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5 Device Options
PART NUMBER
bq27531YZFR-G1
bq27531YZFT-G1
FIRMWARE
VERSION
1.02
(0x0102)
6 Pin Configuration and Functions
(TOP VIEW)
YZF Package
15-Pin DSBGA
bq27531-G1
SLUSBE7C – MARCH 2013 – REVISED JANUARY 2016
COMMUNICATION
FORMAT
I²C
(BOTTOM VIEW)
A3
B3
C3
D3
E3
E3
D3
C3
B3
A3
xxxx ^E
A2
B2
A1
B1
Pin A1
C2
C1
D2
D1
E2
E1
Index Area
D
E2
D2
C2
B2
A2
E1
D1
C1
B1
A1
DIM
MIN
D
2580
E
1926
TYP
2610
1956
MAX
2640
1986
UNITS
m
PIN
NAME
NO.
BAT
E2
BI/TOUT
E3
BSDA
C3
BSCL
B2
CE
D2
REGIN
E1
SCL
A3
SDA
B3
SOC_INT
A2
SRN
B1
SRP
TS
V_CC
V_SS
A1
D3
D1
C1, C2
I/O ⁽¹⁾
I
I/O
I/O
O
I
P
I
I/O
I/O
IA
IA
IA
P
P
Pin Functions
DESCRIPTION
Cell voltage measurement input. ADC input. Recommend 4.8 V maximum for conversion accuracy.
Battery insertion detection input. Power pin for pack thermistor network. Thermistor multiplexer control pin. Use with
pullup resistor >1 MΩ (1.8 MΩ typical).
Battery Charger data line for chipset communication. Push-pull output.
Battery Charger clock output line for chipset communication. Push-pull output.
Chip Enable. Internal LDO is disconnected from REGIN when driven low. Note: CE has an internal ESD protection
diode connected to REGIN. Recommend maintaining V_CE ≤ V_REGIN under all conditions.
Regulator input. Decouple with 0.1-μF ceramic capacitor to Vss.
Slave I²C serial communications clock input line for communication with system (Master). Open-drain I/O. Use with
10-kΩ pullup resistor (typical).
Slave I²C serial communications data line for communication with system (Master). Open-drain I/O. Use with 10-kΩ
pullup resistor (typical).
SOC state interrupts output. Generates a pulse as described in the bq27531-G1 Technical Reference Manual
(SLUUA96). Open-drain output.
Analog input pin connected to the internal coulomb counter where SRN is nearest the Vss connection. Connect to 5-
mΩ to 20-mΩ sense resistor.
Analog input pin connected to the internal coulomb counter where SRP is nearest the PACK– connection. Connect to
5-mΩ to 20-mΩ sense resistor.
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input.
Regulator output and bq27531-G1 power. Decouple with 1-μF ceramic capacitor to Vss.
Device ground
(1) I/O = Digital input/output, IA = Analog input, P = Power connection
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Product Folder Links: bq27531-G1
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