Battery Chargers

LI-ION / LI-PO BATTERY CHARGERS

XC6803/04/05 Single Cell Li-Ion / Li-Polymer Charger IC

The XC6803/04/05 are ConstantVoltage (CV) and Constant-Current (CC) type charging IC for linear charging of single-cell Li-ion and Li-polymer batteries. The basic charging cycle consists of trickle charge mode followed by main charge mode

An LED can be connected to the charge status output pin to allow confirmation of charging by LED illumination. The IC is housed in the small USP-6EL package with high heat dissipation, and a charge circuit can be configured using a minimum of external components. These IC also support temperature control based on JEITA, making it possible to safely charge Li-ion batteries by controlling the CV charge voltage and CC charge current according to the temperature.

KEY FEATURES

SERIES XC6803 XC6804 XC6805
Input Voltage 4.5V ~ 6.0V
Charge Current (Externally Set)  40mA ~ 280mA  200mA ~ 800mA 5mA ~ 40mA
Charge Termination Voltage 4.2V
Trickle Charge Voltage 2.9V
Supply Current (Stand-by) 50μA
Charge Judgment Function
Trickle Charge Mode YES YES OPTIONAL
Recharge Function OPTIONAL OPTIONAL YES
Battery Temperature Monitor YES YES OPTIONAL
Protection Circuits
Thermal Shutdown YES YES YES
Dropout Voltage Monitoring YES YES YES

Charging Over-Voltage and

Over-Current Monitoring

YES YES YES
Safety Timer Function Main Charge 5hrs 10hrs 3hrs
Trickle Charge 0.5hrs 2hrs 0.5hrs
Packages USP-6EL USP-6EL, SOP-8FD USP-6EL
 

XC6803/04/05 TYPICAL APPLICATION CIRCUIT


Li-ion battery temperature monitoring function

The IC monitors the Li-ion battery temperature during charging by means of an NTC Thermistor connected to the THIN pin. CC charging and CV charging are controlled based on the Li-ion battery temperature as shown below to enable safe charging.

XC6805xxB TYPICAL APPLICATION CIRCUIT

 

Optimised for Small Batteries

To fit very small batteries, the minimum value of trickle charge current and charge completion current is 0.5mA. This ensures safer charging and longer battery life for small mobile equipment.