LC709203F
Smart LiB Gauge
Battery Fuel Gauge LSI
For 1‐Cell Lithium‐ion/
Polymer (Li+)
Overview
www.onsemi.com
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
♦
1
WDFN8
CASE 509AF
WLCSP9
CASE 567JH
MARKING DIAGRAMS
WDFN8
9203F
**
ASWLYW
G
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
(Note: Microdot may be in either location)
WLCSP9
203**
YMXXX
•
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
mA
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
Wireless Handsets
Smartphones/PDA Devices
MP3 Players
Digital Cameras
Portable Game Players
USB-related Devices
1
203**
**
Applications
Y
M
XXX
= Specific Device Code
= 01 (LC709203FXE−01MH)
02 (LC709203FXE−02MH)
03 (LC709203FXE−03MH)
04 (LC709203FXE−04MH)
05 (LC709203FXE−05MH)
= Year
= Month Code
= Lot Number
•
•
•
•
•
•
ORDERING INFORMATION
See detailed ordering and shipping information on page 19 of
this data sheet.
©
Semiconductor Components Industries, LLC, 2015
November, 2018
−
Rev. 15
Publication Order Number:
LC709203F/D
LC709203F
Application Circuit Example
System V
DD
10 kW
10 kW
I
2
C Bus V
DD
Master
T
SCL
SDA
T
SENSE
T
SW
Battery
Pack
ASIC
LC709203F
TEST
ALARMB
V
DD
10 kW
Interrupt Input
1
mF
System
System V
SS
V
SS
PACK+
PACK−
Figure 1. Example of an Application Schematic using LC709203F
(Temperature Input via I
2
C)
V
SS
System V
DD
10 kW
Battery
Pack
T
10 kW
Thermistor
SCL
SDA
100
W
10 kW (same as Thermistor
Resistance Value)
T
SW
10 kW
I
2
C Bus V
DD
Master
T
SENSE
ASIC
LC709203F
TEST
ALARMB
V
DD
10 kW
Interrupt Input
1
mF
System
System V
SS
V
SS
PACK+
PACK−
Figure 2. Example of an Application Schematic using LC709203F
(The Temperature is Measured Directly by a Thermistor)
V
SS
www.onsemi.com
2
LC709203F
SDA
SCL
I
2
C
Interface
ALARMB
TEST
Look Up
Table for
Internal
Battery
Impedance
& OCV
Processing
Unit
V
DD
T
SW
Drv
T
SENSE
ADC
V
DD
V
SS
Voltage
Sense
Timer
Reference
Voltage
Power On
Reset
Figure 3. Simplified Block Diagram
WDFN8 3x4, 065P
“Pb-Free, Halogen Free Type”
(Top View)
T
SENSE
SDA
SCL
T
SW
WLCSP9 1.60x1.76
“Pb-Free, Halogen Free Type”
(Bottom View)
8
7
6
5
3C
T
SENSE
3B
T
SW
2B
NC
1B
TEST
3A
V
DD
2A
ALARMB
1A
V
SS
LC709203F
2C
SCL
1
2
3
4
1C
SDA
ALARMB
TEST
V
DD
V
SS
Figure 4. Pin Assignment
www.onsemi.com
3
LC709203F
Table 1. PIN FUNCTION
WDFN8
1
2
3
4
WLP9
1B
1A
3A
2A
Pin Name
TEST
V
SS
V
DD
ALARMB
I/O
I
−
−
O
Connect this pin to V
SS
.
Connect this pin to the battery’s negative (−) pin.
Connect this pin to the battery’s positive (+) pin.
This pin indicates alarm by low output(open drain). Pull-up must be done externally.
Alarm conditions are specified by registers (0x13 or 0x14).
Connect this pin to V
SS
when not in use.
Power supply output for thermistor. This pin goes HIGH during temperature read
operation. Resistance value of TSW (for thermistor pull-up) must be the same value
as the thermistor. (Note 1)
Thermistor sense input. If you connect this pin to thermistor, insert 100
W
resistance
between them for ESD. (Note 1)
I
2
C Data pin (open drain). Pull-up must be done externally.
I
2
C Clock pin (open drain). Pull-up must be done externally.
Don’t care.
Description
5
3B
T
SW
O
6
7
8
−
3C
1C
2C
2B
T
SENSE
SDA
SCL
NC
I
I/O
I/O
−
1. T
SW
and T
SENSE
must be disconnected as Figure 1 when not in use.
Table 2. ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C, V
SS
= 0 V)
Specification
Parameter
Maximum Supply Voltage
Input Voltage
Output Voltage
Symbol
V
DD
max
V
I
(1)
V
o
(1)
V
o
(2)
Input/Output Voltage
Allowable Power Dissipation
V
IO
(1)
P
d max
T
opr
T
stg
Pin/Remarks
V
DD
T
SENSE
T
SW
ALARMB
SDA, SCL
WDFN8
WLP9
Operating Ambient Temperature
Storage Ambient Temperature
T
A
=
−40
to
+85_C
Conditions
V
DD
(V)
−
−
−
−
−
−
−
−
−
Min
−0.3
−0.3
−0.3
−0.3
−0.3
−
−
−40
−55
Typ
−
−
−
−
−
−
−
−
−
+5.5
480
210
+85
+125
_C
mW
Max
+6.5
V
DD
+ 0.3
V
DD
+ 0.3
Unit
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
Table 3. ALLOWABLE OPERATING CONDITIONS
(T
A
=
−40
to +85°C, V
SS
= 0 V)
Specification
Parameter
Operating Supply Voltage
High Level Input Voltage
Symbol
V
DD
(1)
V
IH
(1)
V
IH
(2)
Low Level Input Voltage
V
IL
(1)
V
IL
(2)
Pin/Remarks
V
DD
T
SENSE
ALARMB, SDA, SCL
T
SENSE
ALARMB, SDA, SCL
Conditions
V
DD
(V)
−
2.5 to 4.5
2.5 to 4.5
2.5 to 4.5
2.5 to 4.5
Min
2.5
0.7 V
DD
1.4
V
SS
−
Typ
−
−
−
−
−
Max
4.5
V
DD
−
0.25 V
DD
0.5
Unit
V
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
www.onsemi.com
4
LC709203F
Table 4. ELECTRICAL CHARACTERISTICS
(T
A
=
−40
to +85°C, V
SS
= 0 V)
Specification
Parameter
High Level Input Current
Symbol
I
IH
(1)
Pin/Remarks
SDA, SCL
Conditions
V
IN
= V
DD
(including output
transistor off leakage
current)
V
IN
= V
SS
(including output
transistor off leakage
current)
I
OH
=
−0.4
mA
I
OH
=
−0.2
mA
T
SW
,
ALARMB,
SDA, SCL
SDA, SCL
All pins
Pins other than
the pin under test
V
IN
= V
SS
T
A
= 25_C
I
OL
= 3.0 mA
I
OL
= 1.3 mA
V
DD
(V)
2.5 to 4.5
Min
−
Typ
−
Max
1
Unit
mA
Low Level Input Current
I
IL
(1)
SDA, SCL
2.5 to 4.5
−1
−
−
High Level Output Voltage
V
OH
(1)
V
OH
(2)
V
OL
(1)
V
OL
(2)
T
SW
3.0 to 4.5
2.5 to 4.5
3.0 to 4.5
2.5 to 4.5
2.5 to 4.5
2.5 to 4.5
V
DD
−
0.4
V
DD
−
0.4
−
−
−
−
−
−
−
−
0.1 V
DD
10
−
−
0.4
0.4
−
−
V
Low Level Output Voltage
Hysteresis Voltage
Pin Capacitance
VHYS(1)
CP
pF
Reset Release Voltage
(Note 2)
Initialization Time after
Reset Release (Note 2)
Auto Sleep Set Time
Time Measurement
Accuracy
Consumption Current
(Note 3)
Voltage Measurement
Accuracy
V
RR
T
INIT
T
ATS
T
ME
I
DD
(1)
I
DD
(2)
V
ME
(1)
V
ME
(2)
V
DD
2.4 to 4.5
2.4 to 4.5
T
A
=
−20_C
to +70_C
V
DD
V
DD
Operational mode
Sleep mode
T
A
= +25_C
T
A
=
−20_C
to +70_C
2.5 to 4.5
2.5 to 4.5
2.5 to 4.5
3.6
2.5 to 4.5
−
−
−
−3.5
−
−
−7.5
−20
−
−
1
−
3
1
−
−
2.4
90
1.2
+3.5
4.5
2
+7.5
+20
V
ms
s
%
mA
mV/cell
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
2. Once V
DD
voltage exceeds over the V
RR
, this LSI will release RESET status. And the LSI goes into Sleep mode T
INIT
after it.
3. Consumption current is a value in the range of
−20_C
to +70_C.
www.onsemi.com
5
求职招聘
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
