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參數資料
| 型號： | 27210 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS (bqJUNIOR) |
| 中文描述： | 鋰離子和鋰聚合物電池電量監測計芯片的便攜式應用（bqJUNIOR） |
| 文件頁數： | 1/30頁 |
| 文件大小： | 337K |
| 代理商： | 27210 |
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www.ti.com
FEATURES
HDQ (bq27010) or I
2
C (bq27210)
Communication
Reports Accurate
Time-to-Empty
At Both
Measured and Host-Requested Load Values
Reports Available Capacity Compensated for
Discharge Rate, Temperature, and Age
End-of-Discharge Voltage Compensated for
Discharge Rate and Temperature
Automatic Capacity Reduction with Age
Reports Temperature, Voltage, and Current
High Accuracy Charge and Discharge Current
Integration with Automatic Offset Calibration
Requires No User Calibration
Programmable Input/Output Port
Internal User EEPROM Configuration Memory
Uploadable Coefficients Allows Host-Side Use
with Multiple Pack Characteristics
Stable Oscillator Without External
Components
Dynamic End-of-Discharge Detection Delay to
Allow Use in a High-Dynamic Load
Environment
Automatic Sleep Mode When Communication
Lines are Low
Available in a Small 3 mm x 4 mm QFN
Package
Five Low-Power Operating Modes
–
Active: < 90 μA
–
Sleep: < 2.5 μA
APPLICATIONS
PDA
Smart Phones
MP3 Players
Digital Cameras
Internet Appliances
Handheld Devices
DESCRIPTION
The
bqJUNIOR
stand-alone single-cell Li-Ion and Li-Pol battery
capacity monitoring and reporting devices targeted at
space-limited, portable applications. The IC monitors
a voltage drop across a small current sense resistor
connected in series with the battery to determine
charge
and
discharge
Compensations
for
battery
self-discharge, and discharge rate are applied to the
capacity
measurments
time-to-empty information across a wide range of
operating
conditions.
automatically recalibrated, or learned, in the course
of a discharge cycle from full to empty. Internal
registers include current, capacity, time-to-empty,
state-of-charge, cell temperature and voltage, status,
and more.
bq27010, bq27210
SLUS707B–APRIL 2006–REVISED JANUARY 2007
Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS
(bqJUNIOR)
–
–
–
Ship: < 2 μA (bq27010 only)
Hibernate: < 1.5 μA
Data Retention: < 20 nA
series
are
highly
accurate
activity
of
the
temperature,
battery.
age,
to
provide
available
Battery
capacity
is
The bqJUNIOR can operate directly from single-cell
Li-Ion and Li-Pol batteries and communicates to the
system over a HDQ one-wire or I
2
C serial interface.
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.
bqJUNIOR is a trademark of Texas Instruments.
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 2006–2007, Texas Instruments Incorporated
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