BQ27425-G2_15 Datasheet, PDF (3/39 Pages) Texas Instruments – Fuel Gauge With Integrated Sense Resistor

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5 Device Comparison Table
bq27425-G2
SLUSB23B – OCTOBER 2012 – REVISED JUNE 2015
PART NUMBER
BATTERY TYPE
CHEM_ID ⁽¹⁾
bq27425YZFR-G2A
bq27425YZFT-G2A
bq27425YZFR-G2B
bq27425YZFT-G2B
LiCoO₂
(4.2 V maximum charge)
LiMn₂O₄
(4.3 to 4.35 V maximum charge)
0x128
0x312
(1) Refer to the CHEM_ID subcommand to confirm the battery chemistry type.
(2) Refer to the FW_VERSION subcommand to confirm the firmware version.
FIRMWARE
VERSION ⁽²⁾
2.05
(0x0205)
COMMUNICATION
FORMAT
I²C
6 Pin Configuration and Functions
YZP Package
15-Pin DSBGA
(TOP VIEW)
(BOTTOM VIEW)
A3
B3
C3
D3
E3
E3
D3
C3
B3
A3
E
A2
B2
A1
B1
xxxx ^{Pin A1}
C2
C1
D2
D1
E2
E1
Index Area
D
E2
D2
C2
B2
A2
E1
D1
C1
B1
A1
PIN
NAME
NO.
BAT
E2
BIN
C3
CE
GPOUT
NC
REGIN
SCL
D2
A2
A1, B2
C2, D3, E3
E1
A3
SDA
B3
SRX
B1
V_CC
D1
V_SS
C1
I/O ⁽¹⁾
I
I
I
O
NA
IO
P
I
I/O
IA
P
P, IA
Pin Functions
DESCRIPTION
Cell-voltage measurement input. ADC input. Recommend 4.8 V maximum for conversion accuracy.
Battery-insertion detection input. A logic high-to-low transition is detected as a battery insertion event.
Recommend using a pullup resistor >1 MΩ (1.8 MΩ, typical) to V_CC for reduced power consumption. An internal
pullup resistor option is also available using the Operation Configuration [BI_PU_EN] register bit.
Chip Enable. Internal LDO is disconnected from REGIN when driven low.
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.
Regulator input. Decouple with 0.1-μF ceramic capacitor to V_SS.
Slave I²C serial communications clock input line for communication with system (Master). Use with 10-kΩ pullup
resistor (typical).
Slave I²C serial communications data line for communication with system (Master). Open-drain IO. Use with 10-kΩ
pullup resistor (typical).
Integrated Sense Resistor and Coulomb Counter input typically connected to battery PACK– terminal. For best
performance decouple with 0.1-μF ceramic capacitor to V_SS.
Regulator output and bq27425 processor power. Decouple with 1-μF ceramic capacitor to V_SS.
Device ground and Integrated Sense Resistor termination.
(1) IO = Digital input/output, IA = Analog input, P = Power connection
Copyright © 2012–2015, Texas Instruments Incorporated
Product Folder Links: bq27425-G2
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