© Semiconductor Components Industries, LLC, 2015
January, 2020 − Rev. 16
1 Publication Order Number:
LC709203F/D
Smart LiB Gauge
Battery Fuel Gauge LSI
For 1‐Cell Lithium‐ion/
Polymer (Li+)
LC709203F
Overview
LC709203F is a Fuel Gauge for a single lithium ion/polymer
battery. It is part of our Smart LiB Gauge family of Fuel Gauges
which measure the battery RSOC (Relative State Of Charge) using its
unique algorithm called HG−CVR. The HG−CVR algorithm
eliminates the use of a sense resistor and provides accurate RSOC
information even under unstable conditions (e.g. changes of battery;
temperature, loading, aging and self-discharge). An accurate RSOC
contributes to the operating time of portable devices.
LC709203F is available in two small packages realizing the
industries smallest PCB footprint for the complete solution. It has
minimal parameters to be set by the user enabling simple, quick setup
and operation.
Features
• HG−CVR Algorithm Technology
♦ No External Sense Resistor
♦ 2.8% Accuracy of RSOC
♦ Accurate RSOC of Aging Battery
♦ Automatic Convergence of Error
♦ Adjustment for the Parasitic Impedance around the Battery
♦ Simple and Quick Setup
• Low Power Consumption
♦ 3 A Operational Mode
• Precision Voltage Measurement
♦ ±7.5 mV
• Precision Timer
♦ ±3.5%
• Alerts for Low RSOC and/or Low Voltage
• Temperature Compensation
♦ Sense Thermistor Input
♦ Via I
2
C
• Detect Battery Insertion
• I
2
C Interface (up to 400 kHz Supported)
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Wireless Handsets
• Smartphones/PDA Devices
• MP3 Players
• Digital Cameras
• Portable Game Players
• USB-related Devices
www.onsemi.com
WDFN8
CASE 509AF
MARKING DIAGRAMS
See detailed ordering and shipping information on page 19 of
this data sheet.
ORDERING INFORMATION
1
WLCSP9
CASE 567JH
9203F** = Specific Device Code
** = 01 (LC709203FQH−01TWG)
02 (LC709203FQH−02TWG)
03 (LC709203FQH−03TWG)
04 (LC709203FQH−04TWG)
AS = Assembly Location
WL = Lot Number
YW = Work Week
G = Pb−Free Package
9203F
**
ASWLYW
G
(Note: Microdot may be in either location)
WDFN8
203**
YMXXX
WLCSP9
203** = Specific Device Code
** = 01 (LC709203FXE−01MH)
02 (LC709203FXE−02MH)
03 (LC709203FXE−03MH)
04 (LC709203FXE−04MH)
05 (LC709203FXE−05MH)
Y = Year
M = Month Code
XXX = Lot Number
LC709203F
www.onsemi.com
2
Application Circuit Example
Figure 1. Example of an Application Schematic using LC709203F
(Temperature Input via I
2
C)
LC709203F
ASIC
Battery
Pack
Interrupt Input
V
SS
Master
I
2
C Bus
V
DD
System V
DD
10 k 10 k
10 k
System
System V
SS
1 F
PACK−
PACK+
TEST
V
SS
V
DD
ALARMB
SCL
SDA
T
SENSE
T
SW
T
Figure 2. Example of an Application Schematic using LC709203F
(The Temperature is Measured Directly by a Thermistor)
LC709203F
ASIC
Battery
Pack
Interrupt Input
V
SS
Master
I
2
C Bus
V
DD
System V
DD
10 k 10 k
10 k
System
System V
SS
1 F
PACK−
PACK+
TEST
V
SS
V
DD
ALARMB
SCL
SDA
T
SENSE
T
SW
T
100
10 k (same as Thermistor
Resistance Value)
10 k
Thermistor