BQ27425-G2_14 Datasheet, PDF (3/35 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Integrated Sense Resistor

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PIN DIAGRAM AND PACKAGE DIMENSIONS
(TOP VIEW)
bq27425-G2
SLUSB23A – OCTOBER 2012 – REVISED FEBRUARY 2013
(BOTTOM VIEW)
A3
B3
C3
D3
E3
xxxx ^E
A2
B2
A1
B1
Pin A1
C2
C1
D2
D1
E2
E1
Index Area
D
DIM
MIN
D
2660
E
1720
TYP
2690
1750
MAX
2720
1780
UNITS
m
E3
D3
C3
B3
A3
E2
D2
C2
B2
A2
E1
D1
C1
B1
A1
PIN
NAME
NO.
SRX
B1
V_SS
C1
V_CC
D1
REGIN
E1
CE
D2
BAT
E2
SCL
A3
SDA
B3
BIN
C3
GPOUT
NC
A2
A1, B2
C2, D3,
E3
TYPE ⁽¹⁾
IA
P, IA
P
P
I
I
I
I/O
I
O
N/A
I/O
PIN FUNCTIONS
DESCRIPTION
Integrated Sense Resistor and Coulomb Counter input typically connected to battery PACK- terminal. For best
performance decouple with 0.1μF ceramic capacitor to Vss.
Device ground and Integrated Sense Resistor termination.
Regulator output and bq27425 processor power. Decouple with 1μF ceramic capacitor to Vss.
Regulator input. Decouple with 0.1μF ceramic capacitor to Vss.
Chip Enable. Internal LDO is disconnected from REGIN when driven low.
Cell-voltage measurement input. ADC input. Recommend 4.8V maximum for conversion accuracy.
Slave I²C serial communications clock input line for communication with system (Master). Use with 10kΩ pull-up
resistor (typical).
Slave I²C serial communications data line for communication with system (Master). Open-drain I/O. Use with 10kΩ
pull-up resistor (typical).
Battery-insertion detection input. A logic high to low transition is detected as a battery insertion event. Recommend
using a pull-up resistor >1MΩ (1.8 MΩ typical) to V_CC for reduced power consumption. An internal pull-up resistor
option is also available using the Operation Configuration[BI_PU_EN] register bit.
General Purpose open-drain output. May be configured as a Battery Low indicator or perform SOC interrupt
(SOC_INT) function.
No internal connection. May be left floating.
Reserved for factory use. Must be left floating for proper operation.
(1) I/O = Digital input/output, IA = Analog input, P = Power connection
Copyright © 2012–2013, Texas Instruments Incorporated
Product Folder Links: bq27425-G2
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