BQ27411-G1 Datasheet, PDF (1/20 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration
Check for Samples: bq27411-G1
FEATURES
1
•2 Single Series Cell Li-Ion Battery Fuel Gauge
– Resides in Battery Pack
– Low-Value external Sense Resistor
(10mΩ typical)
– One Time Programmable (OTP)
configuration Non-Volatile Memory (NVM)
– Powered directly from battery with
integrated LDO
– 400-kHz I²C serial interface
– Internal temperature sensor, or
Host reported temperature
• Easy to configure fuel gauging based on
patented Impedance Track™ technology
– Reports Remaining Capacity and State of
Charge (SOC) with Smoothing Filter
– Automatically adjusts for battery aging,
self-discharge, temperature, and rate
changes
– Battery State of Health (aging) estimation
• Small 12-pin 2.5 mm × 4 mm SON Package
APPLICATIONS
• Smartphones, Feature phones and Tablets
• Digital Still and Video Cameras
• Handheld Terminals
• MP3 or Multimedia Players
DESCRIPTION
The Texas Instruments bq27411-G1 is an easy to
configure fuel gauging solution for single series cell
Li-Ion battery packs. The device requires minimal
configuration and uses One Time Programmable
(OTP) Non-Volatile Memory (NVM) to avoid an
initialization download by the system processor.
The bq27411-G1 uses the patented Impedance
Track™ algorithm for fuel gauging, and provides
information such as remaining battery capacity
(mAh), state-of-charge (%), and battery voltage (mV).
The small 12-pin 2.5 mm × 4 mm SON package is
ideal for space constrained applications.
TYPICAL APPLICATION
PACKP
PROG
1.0 M 
I²C Bus
SDA
SDA
SCL
SCL
TEST
1.0 M 
Battery Pack
bq27411
OTP Couloumb
Data Counter
Current
ADC
I-Wake
CPU ^Voltage
ADC
Die Temp 1.8V
Sensor LDO
SRN
10 m ,
1% shunt
SRP
BAT
VDD
Li-Ion
Cell
BAT
VSS
Protection IC
0.47uF
PACKN
FET FET
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Impedance Track is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2014, Texas Instruments Incorporated