Datasheet
HostSystem
PACK-
Single-CellLi-ion
BatteryPack
CHG
DSG
Temp
Sense
Battery
Good
Current
Sense
T
PACK+
Voltage
Sense
Battery
Low
Warning
FETs
I C
2
LDO
REG25
REGIN
VCC
DATA
bq27510-G2
Power
Management
Controller
PROTECTION
IC
bq27510-G2
www.ti.com
SLUS948 –AUGUST 2010
System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection
1
FEATURES
APPLICATIONS
• Smartphones
23
• Battery Fuel Gauge for 1-Series Li-Ion
Applications
• PDAs
• Digital Still and Video Cameras
• Resides on System Main Board
• Handheld Terminals
– Works with Embedded or Removable
• MP3 or Multimedia Players
Battery Packs
– Uses PACK+, PACK–, and T Battery
DESCRIPTION
Terminals
– Can be Powered Directly From Battery Pack The Texas Instruments bq27510-G2 system-side
Li-Ion battery fuel gauge is a microcontroller
(no LDO required)
peripheral that provides fuel gauging for single-cell
• Microcontroller Peripheral Provides:
Li-Ion battery packs. The device requires little system
– Accurate Battery Fuel Gauging
microcontroller firmware development. The
bq27510-G2 resides on the system’s main board and
– Battery Low Interrupt Warning
manages an embedded battery (non-removable) or a
– Battery Insertion Indicator
removable battery pack.
– 64 Bytes of Non-Volatile Scratch Pad
The bq27510-G2 uses the patented Impedance
FLASH
Track™ algorithm for fuel gauging, and provides
• Battery Fuel Gauging Based on Patented
information such as remaining battery capacity
Impedance Track™ Technology
(mAh), state-of-charge (%), run-time to empty (min.),
– Models Battery Discharge Curve for
battery voltage (mV), and temperature (°C).
Accurate Time-To-Empty Predictions
Battery fuel gauging with the bq27510-G2 requires
– Automatically Adjusts for Battery Aging,
only PACK+ (P+), PACK– (P–), and Thermistor (T)
Battery Self-Discharge, and
connections to a removable battery pack or
Temperature/Rate Inefficiencies
embedded battery.
– Low-Value Sense Resistor (10 mΩ or less)
• I
2
C™ for Connection to System
Microcontroller Port
• Small 12-pin 2,5 mm × 4 mm SON Package
TYPICAL APPLICATION
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.
2Impedance Track is a trademark of Texas Instruments.
3I
2
C is a trademark of Phillips Corporation.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.