Description
EUP8202-4.2/8.4 Switch Mode Li-Ion/Polymer Battery Charger .
The EUP8202 is a constant current, constant voltage Li-Ion battery charger controller that uses a current mode PWM step-down (buck) switching architec.
Features
* z Wide Input Supply Voltage Range: 4.7V to 20V
* 4.2 Version 8.9V to 20V
* 8.4 Version 500kHz Switching Frequency End-of-Charge Current Detection Output 3 Hour Charge Termination Timer ¡Ó 1% Charge Voltage Accuracy ¡Ó 10% Charge Current Accuracy Low 10µA Reverse Battery Drain Current
Applications
* z z z Small Notebook Computer Portable DVD Handheld Instruments
Typical Operating Performance
Efficiency vs Input voltage
100
Efficiency vs Input voltage
100
(Curves include input diode)
95 90
(Curves include input diode)
95 90
EFFICIENCY(%)
85 80 75 70 65 60 8 10 12 14 16 18 20
EFFICIENCY(%)