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Lithium-ion Linear Charger IC with Shutdown and Current Path Function

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.

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TYPICAL APPLICATON CIRCUIT

ETR25009-001a

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APPLICATIONS

●

Wearable devices

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Bluetooth headsets

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Wireless earphone/Bluetooth earphone

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Hearing Aid

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Health care devices

●

IoT sensors

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FEATURES

Operating Voltage Range

: 4.5 ~ 5.5V

Charge Voltage

: 3.50V ~ 4.45V ± 30mV

Charge Current

: 10mA～385mA

Can be set by external resistance

Input Current Limit

: 450mA, fixed internally

Battery Sink Current

0.1μA (Attached Battery only)

Functions

Protection Function

:

:

:

:

Current Path

JEITA Conforming Thermistor Detect

Shutdown

Charge Timer

:UVLO

: Thermal Control

: Reverse Current Prevention

Operating Ambient Temperature

: -40°C ～ +85°C

Package

: USP-10B, LGA-10B01

Environmentally Friendly

: EU RoHS Compliant, Pb Free

BAT

THIN

1μF

OUT

0.1μF

1μF

10kΩ

10μF

CSO

PGB

SD

Protection

IC

Li-ion Battery

Thermistor

(NTC)