BQ27510-G3 Datasheet, PDF (1/20 Pages) Texas Instruments – System-Side Impedance Track Fuel Gauge With Direct Battery Connection

bq27510-G3
www.ti.com
SLUSAT1 – MARCH 2013
System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection
FEATURES
1
•23 Single series cell Li-Ion battery fuel gauge
resides on system board
– Integrated 2.5 VDC LDO
– External low-value 10 mΩ sense resistor
• Patented Impedance Track™ technology
– Adjusts for battery aging, self-discharge,
temperature, and rate changes
– Reports Remaining Capacity, State of
Charge (SOC), and Time-to-Empty
– Optional Smoothing Filter
– Battery State of Health (aging) estimation
– Supports embedded or removable packs
with up to 32Ahr capacity
– Accommodates pack swapping with 2
separate battery profiles
• Microcontroller peripheral supports:
– 400-kHz I²C™ serial interface
– 32 Bytes of Scratch-Pad FLASH NVM
– Battery Low digital output warning
– Configurable SOC Interrupts
– External thermistor, internal sensor, or host
reported temperature options
• 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 bq27510-G3 system-side Li-
Ion battery fuel gauge is a microcontroller peripheral
that provides fuel gauging for single-cell Li-Ion battery
packs. The device requires little system
microcontroller firmware development. The bq27510-
G3 resides on the system’s main board and manages
an embedded battery (non-removable) or a
removable battery pack.
The bq27510-G3 uses the patented Impedance
Track™ algorithm for fuel gauging, and provides
information such as remaining battery capacity
(mAh), state-of-charge (%), run-time to empty (min.),
battery voltage (mV), temperature (°C) and state of
health (%).
Battery fuel gauging with the bq27510-G3 requires
only PACK+ (P+), PACK– (P–), and optional
Thermistor (T) connections to a removable battery
pack or embedded battery circuit.
TYPICAL APPLICATION
Power
Management
Controller
Host System
VCC
REG25
REGIN
LDO
GPOUT
Voltage
Sense
2
IC
DATA
Temp
Sense
bq27510-G3
Current
Sense
PACK+
T
PACK-
Single-Cell Li-ion
Battery Pack
PROTECTION
IC
CHG
FETs
DSG
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
I²C is a trademark of Phillips Corporation.
3
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 © 2013, Texas Instruments Incorporated