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BQ27510 Datasheet

  • BQ27510

  • Texas Instruments [System-Side Impedance-Track Fuel Gauge W...

  • 799.08KB

  • TI

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bq27510
www.ti.com..........................................................................................................................................................
SLUS816A 鈥?MARCH 2008 鈥?REVISED JUNE 2008
System-Side Impedance Track鈩?Fuel Gauge With Direct Battery Connection
1
FEATURES
APPLICATIONS
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Smartphones
PDAs
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
鈥?/div>
Battery Fuel Gauge for 1-Series Li-Ion
Applications
鈥?/div>
Resides on System Main Board
鈥?Works with Embedded or Removable
Battery Packs
鈥?Uses
PACK+, PACK鈥?
and
T
Battery
Terminals
鈥?Can be Powered Directly From Battery Pack
(no LDO required)
鈥?/div>
Microcontroller Peripheral Provides:
鈥?Accurate Battery Fuel Gauging
鈥?/div>
Battery Low
Interrupt Warning
鈥?/div>
Battery Insertion
Indicator
鈥?96 Bytes of Non-Volatile Scratch Pad
FLASH
鈥?/div>
Battery Fuel Gauging Based on Patented
Impedance Track鈩?Technology
鈥?Models Battery Discharge Curve for
Accurate Time-To-Empty Predictions
鈥?Automatically Adjusts for Battery Aging,
Battery Self-Discharge, and
Temperature/Rate Inefficiencies
鈥?Low-Value Sense Resistor (10 m鈩?or less)
鈥?/div>
I
2
C鈩?for Connection to System
Microcontroller Port
鈥?/div>
Small 12-pin 2,5 mm 脳 4 mm SON Package
23
DESCRIPTION
The Texas Instruments bq27510 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
resides on the system鈥檚 main board and manages an
embedded battery (non-removable) or a removable
battery pack.
The bq27510 uses the patented Impedance Track鈩?/div>
algorithm for fuel gauging, and provides information
such as remaining battery capacity (mAh),
state-of-charge (%), run-time to empty (min.), battery
voltage (mV), and temperature (擄C).
Battery fuel gauging with the bq27510 requires only
PACK+ (P+), PACK鈥?(P鈥?, and Thermistor (T)
connections to a removable battery pack or
embedded battery.
TYPICAL APPLICATION
Host System
Single-Cell Li-ion
Battery Pack
REGIN
Voltage
Sense
Temp
Sense
bq27510
Battery
Good
Current
Sense
PACK -
FETs
CHG
DSG
PACK +
PROTECTION
IC
VCC
REG25
Battery
Low
Warning
LDO
Power
Management
Controller
IC
2
DATA
T
1
2
3
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.
I2C is a trademark of Phillips Corporation.
Copyright 漏 2008, Texas Instruments Incorporated
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.

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