XC6806
Series
Lithium-ion Linear Charger IC with Shutdown and Current Path Function
ETR25009-002
■GENERAL
DESCRIPTION
Equipped with a system power supply function, the XC6806 is a linear charger IC for single-cell lithium ion batteries and lithium
polymer batteries. The current path function gives system power supply priority over charging the lithium ion battery. The charge
current can be adjusted with an external resistance, and an internal limit circuit with an input current of 450mA automatically
reduces the charging current based on the load current that flows to the system.
The lithium ion battery temperature is monitored in conformance with JEITA, and by controlling the charge voltage and charge
current as appropriate for the temperature, the battery can be charged safely. Internal protective functions include the charge
timer, UVLO, thermal control, and reverse current prevention.
Shutdown function completely shuts off power supply from the battery to the system to prevent battery leakage current while
the device is not in use, and this enables longer use of low supply current devices that operate using a small battery.
Charge status, connection status with USB can be confirmed with CSO terminal and PGB terminal.
The IC is mounted in the small, high heat dissipation USP-10B or LGA-10B01 package, and a charging circuit can be designed
with minimal external components.
■APPLICATIONS
●Wearable
devices
●Bluetooth
headsets
●Wireless
earphone/Bluetooth earphone
●Hearing
Aid
●Health
care devices
●IoT
sensors
■FEATURES
Operating Voltage Range
Charge Voltage
Charge Current
Input Current Limit
Battery Sink Current
Functions
: 4.5 ~ 5.5V
: 3.50V ~ 4.45V
±
30mV
: 10mA½385mA
Can be set by external resistance
: 450mA, fixed internally
0.1μA (Attached Battery only)
: Current Path
: JEITA Conforming Thermistor Detect
: Shutdown
:
:
:
:
:
:
:
Charge Timer
UVLO
Thermal Control
Reverse Current Prevention
-40°C
½
+85°C
USP-10B, LGA-10B01
EU RoHS Compliant, Pb Free
Protection Function
Operating Ambient Temperature
Package
Environmentally Friendly
■TYPICAL
APPLICATON CIRCUIT
V
IN
Li-ion Battery
C
IN
1μF
OUT
C
OUT
10μF
C
BAT
1μF
BAT
CSO
Protection
IC
10kΩ
C
REG
0.1μF
V
REG
PGB
Thermistor
(NTC)
THIN
SD
V
SS
R
SET
I
SET
1/20
XC6806
Series
■BLOCK
DIAGRAM
Back Current
Protection
V
IN
UVLO
Control
Logic
Constant
Voltage
Constant
Current
Constant
Voltage
Battery Discharge
Control
OUT
BAT
Thermal
Control
Constant
Current
Constant
Voltage
Recharge
Control
Logic
I
SET
Trickle
Control
Logic
V
REG
Internal
Regulator
Complete
THIN
Battery
Control
Logic
Control
Logic
0 deg.C
Control
Logic
SD
10 deg.C
Control
Logic
45 deg.C
Control
Logic
Control
Logic
Each
Block
Control Logic
CSO
60 deg.C
V
SS
PGB
* The diodes above are electrostatic protection diodes and parasitic diodes.
■PRODUCT
CLASSIFICATION
XC6806①②③④⑤⑥-⑦
DESIGNATOR
①
②③④
⑤⑥-⑦
(*1)
ITEM
SYMBOL
A
DESCRIPTION
4 Temperature Monitor (JEITA C
ompliant)
3 Temperature Monitor (Semi-custom)
2 Temperature Monitor (Semi-custom)
3.50V~4.45V
USP-10B (3000pcs/Reel)
(*2)
LGA-10B01 (5000pcs/Reel)
TYPE
Charge Voltage
Packages (Order Unit)
B
C
350~445
DR-G
11-G
(*1)
(*2)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
The reels are shipped in a moisture-proof packing. Please consult with your Torex sales contact.
2/20
XC6806
Series
■PIN
CONFIGURATION
V
IN
10
I
SE T
9
THIN
8
V
REG
7
PGB
6
1
2
3
4
5
USP-10B
(BOTTOM VIE W)
OUT
BAT
SD
V
SS
CSO
OUT
1 0
BAT
9
SD
V
SS
8
7
1
V
IN
2
I
SE T
3
THIN
4
V
REG
5
PGB
CSO
6
LGA-10B01
(BOTTOM VIE W)
*The dissipation pad for the USP-10B package should be solder-plated in recommended mount
pattern and metal masking so as to enhance mounting strength and heat release. When taking out a
potential of the heat-sink, connect with V
SS
pin (#4 pin).
■PIN
ASSIGNMENT
PIN NUMBER
PIN NAME
USP-10B
1
2
3
4
5
6
7
8
9
10
LGA-10B01
10
9
8
7
6
5
4
3
2
1
OUT
BAT
SD
V
SS
CSO
PGB
V
REG
THIN
I
SET
V
IN
Output Power to The System
Battery Connection
Shutdown Control
Ground
Charge Status Output
Power Good Status Output
Internal Regulator Output
Temperature Detection
Charge Current Setup
Power Supply Input
FUNCTIONS
■FUNCTION
PIN NAME
SD
SIGNAL
Rising Edge at UVLO Detect
Other Signal
PGB
ON (Low impedance)
OFF (High impedance)
ON (Low impedance)
CSO
OFF (High impedance)
1kHz Oscillation
STATUS
Shutdown Function
(Turn off The Pch Driver between the OUT pin and the BAT pin)
Keep The Actual Condition
Active (UVLO Release)
UVLO Detect
Trickle Charge, Main Charge
Charge Completion, Charger Disable
Abnormal Mode
3/20
XC6806
Series
■ABSOLUTE
MAXIMUM RATING
Ta=25°C
PARAMETER
V
IN
Pin Voltage
OUT Pin Voltage
BAT Pin Voltage
V
REG
Pin Voltage
CSO Pin Voltage
PGB Pin Voltage
I
SET
Pin Voltage
THIN Pin Voltage
SD Pin Voltage
Terminal Voltage between V
IN
and OUT
Condition: VBAT≦2.3V
OUT Pin Current
BAT Pin Current
USP-10B
LGA-10B01
Operating Ambient Temperature
Storage Temperature
Each rating voltage is based on the Vss.
(*1)
(*2)
(*3)
SYMBOL
V
IN
V
OUT
V
BAT
V
REG
V
CSO
V
PGB
V
ISET
V
THIN
V
SD
V
DS
I
OUT
I
BAT
RATINGS
- 0.3
½
6.5
- 0.3
½
6.5
- 0.3
½
6.5
-0.3
½
V
IN
+ 0.3 or 6.5
(*1)
- 0.3
½
6.5
- 0.3
½
6.5
-0.3
½
OUT + 0.3 or 6.5
(*2)
- 0.3
½
6.5
- 0.3
½
6.5
-5.5
½
5.5
1000
500
150
1000 (40mm x 40mm Standard Board)
(*3)
1200 (40mm x 40mm Standard Board)
(*
３
)
-40
½
+85
-55
½
+125
UNITS
V
V
V
V
V
V
V
V
V
V
mA
mA
Power Dissipation
Pd
mW
Topr
Tstg
°C
°C
Either of lower one, V
IN
+0.3V or 6.5V, is applicable.
Either of lower one, OUT+0.3V or 6.5V, is applicable.
It is reference data on the power dissipation when mounting the board. Please see the power dissipation page for the mounting condition.
4/20
XC6806
Series
■ELECTRICAL
CHARACTERISTICS
XC6806 Series
PARAMETER
Input Voltage
Supply Current
(*1)
SD Low Level Voltage
SD High Level Voltage
SD Pull-down Resistance
UVLO Threshold Voltage
UVLO Hysteresis Voltage
(*1)
Input Current Limit
OUT Regulation Voltage
OUT Regulation Voltage
on Charge Current Reduction
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
(*1)
Charge Voltage
Charge Voltage on Hot Operation
Unless otherwise stated, V
IN
=5V, C
IN
=C
BAT
=1μ C
OUT
=10μF, C
REG
=0.1μ Ta=25°C
F,
F,
SYMBOL
V
IN
I
SS
V
SDL
V
SDH
R
SD
V
UVLO
V
UVLOH
I
INL
V
OUT
V
OCCR
V
TRK
V
TRKH
V
CV
V
CVH
I
BAT
=20mA
I
BAT
=20mA, Type A Only
I
OUT
=200mA, I
BAT
=0mA
I
OUT
=200mA,
R
SET
=0.68kΩ
Rising
Rising
V
IN
to V
SS
CONDITIONS
MIN.
4.5
-
-
1.5
40
4.1
-
405
4.5
3.85
2.8
-
V
CVT
-0.03
V
CVT
-0.18
-
R
SET
=30kΩ
R
SET
=0.68kΩ
R
SET
=30kΩ
R
SET
=0.68kΩ
R
SET
=30kΩ,
Type A, B
Only
R
SET
=0.68kΩ,
Type A, B
Only
R
SET
=30kΩ
R
SET
=0.68kΩ
0.6
36
5
340
3
175
0.6
36
-
I
CSO
=I
PGB
=10mA
V
CSO
=V
PGB
=5.5V
-
-
-
-
V
BAT
=4.5V
Charge Completion
V
IN
=V
SD
=0V, IOUT=0A
V
IN
=V
OUT
=V
SD
=0V
after Toggle(L→H→L)
Signal to SD Pin
-
-
-
TYP.
5.0
200
-
-
100
4.2
100
450
4.6
3.95
2.9
100
V
CVT(*2)
V
CVT
-0.15
V
CV
-0.1
or
V
CVH
-0.1
1.5
45
10
385
6
200
1.5
45
V
BAT
-0.1
-
-
300
300
0.2
0.1
0.1
MAX.
5.5
-
0.3
-
170
4.3
-
495
4.7
4.05
3.0
-
V
CVT
+0.03
V
CVT
-0.12
-
2.4
54
15
430
9
225
2.4
54
-
0.5
0.1
-
-
1.0
0.5
0.5
UNITS
V
μ
A
V
V
kΩ
V
mV
mA
V
V
V
mV
V
V
CIRCUIT
-
①
①
①
①
①
①
①
①
①
①
①
①
①
Recharge Threshold Voltage
Trickle Charge Current (Min.)
Trickle Charge Current (Max.)
Charge Current (Min.)
Charge Current (Max.)
Charge Current on Cold Operation (Min.)
Charge Current on Cold Operation (Max.)
Charge Completion Current (Min.)
Charge Completion Current (Max.)
Battery Discharge Threshold Voltage for
OUT Pin
CSO, PGB ON Voltage
CSO, PGB Leakage Current
Output Driver ON Resistance
Charge Driver ON Resistance
BAT Sink Current
BAT Sink Current at UVLO
BAT Sink Current at Shutdown
(*1)
V
RC
I
TRKL
I
TRKM
I
BATL
I
BATM
I
BATCL
I
BATCM
I
COL
I
COM
V
BD
V
CP
I
LCP
R
OUT
R
CHG
I
BSC
I
BAT
I
BSD
V
mA
mA
mA
mA
mA
mA
mA
mA
V
V
μ
A
mΩ
mΩ
μ
A
μ
A
μ
A
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
(*2)
Setting
Design value
Value
5/20
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