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ON Semiconductor |
Ordering number : ENA2173
LC709202F
CMOS LSI
1-Cell Li+ (lithium-ion)
Battery Monitor IC
http://onsemi.com
Overview
The LC709202F is an IC that measures the remaining power level of 1-cell lithium-ion (Li+) batteries used for a
portable equipment etc.
This product is able to reduce a fuel gauge errors by implementing its unique correction technology for measurement
value of battery temperature and voltage.
It is possible for this to realize high precision for measurement in battery power measurement IC that does not need a
current sensing resistor. (±3% under certain conditions)
Applications
• Wireless Handsets
• Smartphones/PDA devices
• MP3 players
• digital cameras
• Portable Game Players
• USB-related devices
Package Dimensions
unit : mm (typ)
3318
TOP VIEW
2.6
SIDE VIEW
BOTTOM VIEW
(0.125)
Features
Accuracy of remaining battery power level
measurement
• ±3% (at an ambient operating temperature of
0°C to 50°C)
Note: The accuracy above is the value of an
experiment using the evaluation board.
LASER MARKED
INDEX
(C0.116)
21
0.5
(0.55)
Precision ±7.5mV/Cell Voltage Measurement
SIDE VIEW
A current sensing resistor is unnecessary.
Alert function
Interface
• I2C Interface (up to 400 kHz supported)
0.25
VCT16(2.6X2.6)
Low power consumption
• Normal Mode : 15μA
• Sleep Mode : 0.1μA
Corresponding battery
• Model to be used depending on the material of the electrode of the battery pack + is different.
LC709202F-01: ternary system
LC709202F-02: nickelic acid
* I2C Bus is a trademark of Philips Corporation.
Semiconductor Components Industries, LLC, 2013
April, 2013
40313HKIM 20130314-S00002 No.A2173-1/10
LC709202F
Ports
• I2C communication pin
• Battery temperature reading control pin
• Analog voltage input pin for battery temperature
• External alarm / Interrupt for Low-Battery warning
• Reset pin
• TEST pin
• Power supply pin
2 (SDA, SCL)
1 (TSW)
1 (TSENSE)
1 (ALARMB)
1 (RESB)
3 (TEST0, TEST1, TEST2)
3 (VSS, VDD1, VDD2)
Package form
• VCT16 (2.6×2.6) : Lead-free type
Pin Assignment
VDD2
NC
NC
TEST2
12 11 10 9
13 8
14 LC709202FRD 7
15 6
16 5
1234
TEST1
NC
NC
ALARMB
Top view
VCT16 (2.6×2.6) “Lead-free Type”
Pin Function
VCT16 Pin Name
1 VSS
2 RESB
3 VDD1
4 TEST0
5 ALARMB
8 TEST1
9 TSW
10 TSENSE
11 SDA
12 SCL
13 VDD2
16 TEST2
I/O Description
- Connect to the - terminal of the battery.
I Reset pin
- Connect to the + terminal of the battery.
I Test pin
*Connect to VSS.
O Alert indication. An active low output used to indicate specified condition thresholds have been met.
*When you do not use an alert function, please connect with VSS.
O Set “OPEN”
O Battery temperature reading control pin
*Set high when reading in the temperature, held low at other times.
I Battery temperature analog voltage input pin
I/O I2C data pin
I/O I2C clock pin
- + power pin for I2C-Bus communication pin(SDA,SCL)
O Set “OPEN”
No.A2173-2/10
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