XC6806Series
ETR25009-002
Lithium-ion Linear Charger IC with Shutdown and Current Path Function
■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
■FEATURES
Operating Voltage Range
Charge Voltage
: 4.5 ~ 5.5V
: 3.50V ~ 4.45V ± 30mV
: 10mA~385mA
Charge Current
Can be set by external resistance
●Health care devices
●IoT sensors
Input Current Limit
: 450mA, fixed internally
Battery Sink Current
Functions
0.1μA (Attached Battery only)
: Current Path
: JEITA Conforming Thermistor Detect
: Shutdown
Protection Function
: Charge Timer
: UVLO
: Thermal Control
: Reverse Current Prevention
: -40°C ~ +85°C
: USP-10B, LGA-10B01
: EU RoHS Compliant, Pb Free
Operating Ambient Temperature
Package
Environmentally Friendly
■TYPICAL APPLICATON CIRCUIT
VIN
OUT
CSO
PGB
COUT
10μF
Li-ion Battery
CIN
1μF
BAT
VREG
CBAT
1μF
Protection
IC
10kΩ
CREG
0.1μF
SD
THIN
ISET
Thermistor
(NTC)
VSS
RSET
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