BQ27441-G1 Datasheet, PDF (3/22 Pages) Texas Instruments – System-Side Impedance Track Fuel Gauge

bq27441-G1
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PIN DIAGRAM AND PACKAGE DIMENSIONS
PIN DIAGRAM
(TOP VIEW)
SDA 1
SCL 2
VSS 3
NC 4
bq27441
VDD 5
BAT 6
SLUSBH1A – NOVEMBER 2013 – REVISED JANUARY 2014
12 GPOUT
11 NC
10 BIN
9 NC
8 SRP
7 SRN
12-pin VSON, 2.5 x 4mmm 0.4mm pitch
PIN
NAME
NO.
BAT
6
VDD
5
VSS
3
SRP
8
SRN
7
GPOUT
12
SDA
1
SCL
2
BIN
10
NC
4, 8, 11
TYPE ⁽¹⁾
PI, AI
PO
PI
AI
AI
DO
DIO
DIO
DI
--
PIN FUNCTIONS
DESCRIPTION
LDO regulator input, battery voltage input, and coulomb counter input typically connected to the PACK+ terminal.
1.8V Regulator Output. Decouple with 0.47μF ceramic capacitor to Vss. This pin is not intended to provide power
for other devices in the system.
Ground pin.
Coulomb counter differential inputs expecting an external 10mΩ, 1% sense resistor. Connect SRP to BAT (CELLP)
and connect SRN to PACKP. Refer to application diagram.
General Purpose open-drain output. May be configured as a Battery Low indicator or perform SOC interrupt
(SOC_INT) function.
Slave I²C serial bus for communication with system (Master). Open-drain pins. Use with external 10kΩ pull-up
resistors (typical) for each pin. If the external pull-up resistors will be disconnected from these pins during normal
operation, recommend using external 1MΩ pull-down resistors to VSS at each pin to avoid floating inputs.
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 VDD for reduced power consumption. An internal pull-up resistor
option is also available.
No internal connection. May be left floating or tied to VSS.
(1) I/O = Digital input/output, IA = Analog input, P = Power connection
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