BQ27520-G4 Datasheet, PDF (4/34 Pages) Texas Instruments – System-Side Impedance Track Fuel Gauge

bq27520-G4
SLUSB20B – NOVEMBER 2012 – REVISED DECEMBER 2015
6 Pin Configuration and Functions
(TOP VIEW)
YZF Package
15-Pin DSBGA
(BOTTOM VIEW)
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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 Functions
PIN
NAME
NUMBER
TYPE ⁽¹⁾
DESCRIPTION
BAT
E2
I
Cell-voltage measurement input. ADC input. Recommend 4.8 V maximum for conversion
accuracy.
BAT_GD
B2
Battery Good push-pull indicator output. Active low and output disabled by default. Polarity
O
is configured via Op Config [BATG_POL] and the output is enabled via OpConfig C
[BATGSPUEN].
BAT_LOW
C3
Battery Low push-pull output indicator. Active high and output enabled by default. Polarity is
O
configured via Op Config [BATL_POL] and the output is enabled via OpConfig C
[BATLSPUEN].
BI/TOUT
E3
IO
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor-
multiplexer control pin. Use with pullup resistor >1 MΩ (1.8 MΩ, typical).
CE
REGIN
SCL
SDA
Chip Enable. Internal LDO is disconnected from REGIN when driven low.
D2
I
Note: CE has an internal ESD protection diode connected to REGIN. Recommend
maintaining V_CE ≤ V_REGIN under all conditions.
E1
P
Regulator input. Decouple with 0.1-μF ceramic capacitor to V_SS.
A3
I
Slave I²C serial communications clock input line for communication with system (Master).
Open-drain IO. Use with 10-kΩ pullup resistor (typical).
B3
IO
Slave I²C serial communications data line for communication with system (Master). Open-
drain IO. Use with 10-kΩ pullup resistor (typical).
SOC_INT
A2
O
SOC state interrupts output. Generates a pulse under the conditions specified in the
bq27520-G4 Technical Reference Manual, SLUUA35. Open drain output.
SRN
SRP
B1
IA
Analog input pin connected to the internal coulomb counter with a Kelvin connection where
SRN is nearest the V_SS connection. Connect to 5-mΩ to 20-mΩ sense resistor.
A1
IA
Analog input pin connected to the internal coulomb counter with a Kelvin connection where
SRP is nearest the PACK– connection. Connect to 5-mΩ to 20-mΩ sense resistor.
TS
D3
IA
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input.
V_CC
D1
P
Regulator output and bq27520-G4 processor power. Decouple with 1-μF ceramic capacitor
to V_SS.
V_SS
C1, C2
P
Device ground
(1) IO = Digital input-output, IA = Analog input, P = Power connection
4
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